SSC CHSL Tier 1 2017 General Intelligence & Reasoning Questions with Solutions

Explanation

The relationship established in the first pair is vehicle and its designated pathway of travel. A train is a vehicle that runs specifically on a track. Similarly, a truck is a vehicle that runs on a road, maintaining the identical logical relationship of Vehicle : Pathway.

Explanation

The relationship in the given pair 53:35 is that the digits of the first number are reversed to form the second number. Swapping the tens and units digits of 53 yields 35.

Applying this same pattern, reversing the digits of the first number in the pair 37:73 yields the second number, as swapping the digits of 37 results in 73.

Explanation

The relationship in the given analogy is established by adding consecutive integers to the alphabetical positions of each letter in the first term to get the corresponding letters in the second term.

Looking at the first pair PAL to RDP: P is the 16th letter. Adding 2 gives 18, which is R. A is the 1st letter. Adding 3 gives 4, which is D. L is the 12th letter. Adding 4 gives 16, which is P.

Applying the same pattern of +2, +3, and +4 to the letters of MRF: M is the 13th letter. Adding 2 gives 15, which is O. R is the 18th letter. Adding 3 gives 21, which is U. F is the 6th letter. Adding 4 gives 10, which is J.

This yields the letter combination OUJ.

Explanation

Rabbits belong to the taxonomic order Lagomorpha, which is distinct from the order Rodentia. While they share similarities with rodents, such as continuously growing incisors, rabbits possess four upper incisors instead of the two found in rodents. This biological distinction classifies rabbits as lagomorphs rather than rodents, making this pair incorrect.

Explanation

The logic followed by the number pairs is that the difference between the second number and the first number is equal to 10. For the pair 25-30, the difference between the numbers is 30 - 25 = 5. Since this difference is 5 instead of 10, it deviates from the common rule shared by the other pairs, making it the odd one out.

Explanation

The letters in the other options represent consecutive letters of the English alphabet written in reverse order:

XWV: X (24) → W (23) → V (22) ZYX: Z (26) → Y (25) → X (24) RQP (printed as ROQ in the exam): R (18) → Q (17) → P (16)

In contrast, AZX does not consist of three consecutive letters in reverse order, making it the odd one out.

Explanation

To find the word that comes at the third position according to the dictionary, we arrange all the given words in alphabetical order:

Cherry Chess Chest Childish Chimney

Comparing the words letter by letter, the first three letters determine the initial ordering. Words starting with Che (Cherry, Chess, Chest) come before words starting with Chi (Childish, Chimney).

Among the Che words, the fourth letters are r in Cherry and s in Chess and Chest. Since r comes before s, Cherry is the first word.

Next, comparing Chess and Chest, both share the first four letters Ches. Comparing their fifth letters, s comes before t in the alphabet, which places Chess second and Chest third in the dictionary order.

Explanation

The given series follows a pattern where each term, starting from the third term, is the sum of the preceding two terms:

19 + 9 = 28 9 + 28 = 37 28 + 37 = 65

Following this pattern, the missing number in the series is: 37 + 65 = 102

Explanation

Each letter in the series is obtained by adding 3 to the positional value of the preceding letter in the standard alphabetical order:

I = 9 L = 9 + 3 = 12 O = 12 + 3 = 15 R = 15 + 3 = 18

Following this constant addition pattern, the next term in the series is:

18 + 3 = 21, which corresponds to the letter U.

Explanation

Present age of the brother is 32 years. After 6 years, the brother's age will be 32 + 6 = 38 years.

The ratio of the ages of Ankur's sister and his brother after 6 years is 3:2. Sister's age after 6 years = 38 × 3/2 = 57 years.

This means Ankur's sister's present age is 57 - 6 = 51 years.

The ratio of the present ages of Ankur and his sister is 4:3. Ankur's present age = 51 × 4/3 = 68 years.

Therefore, Ankur's age after 3 years will be 68 + 3 = 71 years.

Explanation

The given word is STATEMENT. The word Start requires the letter R, which is not present in STATEMENT.

Explanation

The letters of the word FRAME are coded by shifting each letter forward by 3 positions in the alphabetical order: F is shifted by 3 positions to become I R is shifted by 3 positions to become U A is shifted by 3 positions to become D M is shifted by 3 positions to become P E is shifted by 3 positions to become H

Applying this same logic to the word ROYAL: R + 3 positions gives U O + 3 positions gives R Y + 3 positions wraps around the alphabet to give B A + 3 positions gives D L + 3 positions gives O

This results in the coded word URBDO.

Explanation

According to the specified mathematical code language, the operators are substituted as follows: represents ×

• represents ÷ × represents - ÷ represents +

Applying these substitutions to the given expression: 15 - 6 + 10 × 3 ÷ 2

We get: 15 × 6 ÷ 10 - 3 + 2

Solving the expression using the BODMAS rule:

First, perform the division: 6 ÷ 10 = 0.6

Next, perform the multiplication: 15 × 0.6 = 9

Finally, perform the addition and subtraction: 9 - 3 + 2 = 6 + 2 = 8

Explanation

Interchanging the minus (-) and multiplication (×) signs in the original equation yields a correct mathematical statement.

The original equation is: 12 + 10 - 28 ÷ 7 × 4 = 48

Replacing - with × and × with - gives: 12 + 10 × 28 ÷ 7 - 4 = 48

Applying the BODMAS rule, we first perform the division operation: 28 ÷ 7 = 4

Substituting this value back into the equation: 12 + 10 × 4 - 4 = 48

Next, we perform the multiplication operation: 10 × 4 = 40

Now substituting this back: 12 + 40 - 4 = 48

Finally, performing the addition and subtraction: 52 - 4 = 48 48 = 48

Since the left-hand side equals the right-hand side, the equation is balanced.

Explanation

The division symbol (÷) in these equations represents a custom mathematical operation where the result is the negative product of the two numbers:

a ÷ b = -(a × b)

Applying this operation to the given cases:

-4 ÷ 1 = -(-4 × 1) = 4

7 ÷ (-7) = -(7 × (-7)) = 49

3 ÷ 1 = -(3 × 1) = -3

Following the same logic to find the value of -8 ÷ (-5):

-8 ÷ (-5) = -(-8 × (-5)) = -40

Explanation

Each term in the series consists of eight alternating letters of A and B, where some are uppercase and some are lowercase.

By analyzing the distribution of uppercase and lowercase letters, we observe a block of three consecutive lowercase letters shifting one position to the left in each subsequent term:

In the first term ABABAbab, the lowercase letters occupy the last three positions: _ _ _ _ _ l l l.

In the second term ABABabaB, the lowercase segment shifts left by one position: _ _ _ _ l l l _.

In the third term ABAbabAB, the lowercase segment shifts left again: _ _ _ l l l _ _.

In the fourth term ABabaBAB, the lowercase segment shifts left again: _ _ l l l _ _ _.

In the fifth term AbabABAB, the lowercase segment shifts left again: _ l l l _ _ _ _.

Following this consistent pattern, in the sixth term, the block of three lowercase letters must shift left by one more position to occupy the first three positions: l l l _ _ _ _ _.

Applying this to the alternating A and B sequence, the first three letters are lowercase a, b, a, and the remaining five letters are uppercase B, A, B, A, B. This gives the term abaBABAB.

Explanation

Let the starting position of the hiker be at the origin (0, 0) on a Cartesian coordinate system, where East represents the positive x-direction, West the negative x-direction, North the positive y-direction, and South the negative y-direction.

The hiker walks 2 km South, reaching the coordinate (0, -2).

He then turns West and walks 4 km, which brings him to (-4, -2).

Next, he turns North and walks 5 km. This changes his vertical position to 3 km along the y-axis, making his new coordinate (-4, 3).

Finally, he turns to his right, which points East, and walks 4 km. This increases his horizontal position by 4 km, bringing him to (0, 3).

Comparing his final position of (0, 3) with his starting position of (0, 0), the hiker is 3 km North of where he began.

Explanation

To determine which conclusions follow, we can analyze the relationship between the categories.

According to Statement I, the set of spaghetti and the set of noodles are completely disjoint, meaning they have no elements in common.

According to Statement II, there is an intersection between the set of food and the set of spaghetti, meaning some food is spaghetti.

Conclusion I states that all noodles are food. Since there is no positive relationship established between noodles and food, noodles can exist completely outside the set of food. Therefore, Conclusion I does not logically follow.

Conclusion II states that all food are noodles. Since some food is spaghetti and no spaghetti is a noodle, that overlapping portion of food and spaghetti can never be noodles. This makes it impossible for all food to be noodles. Therefore, Conclusion II also does not follow.

Explanation

The given series follows a distinct pattern for each letter position in successive terms:

The first letter of each term increases by one position in alphabetical order: C (+1) to D (+1) to E (+1) to F (+1) to G.

The second letter of each term increases by two positions in alphabetical order: O (+2) to Q (+2) to S (+2) to U (+2) to W.

The third letter of each term increases by one position in alphabetical order: T (+1) to U (+1) to V (+1) to W (+1) to X.

Combining these letters yields the next term in the series, which is GWX.

Explanation

The given number series is an arithmetic progression where each successive term is obtained by subtracting 3 from the preceding term.

49 - 3 = 46 46 - 3 = 43 43 - 3 = 40

Following this pattern, the next term is calculated as: 40 - 3 = 37

This is verified by the final term of the series: 37 - 3 = 34

Explanation

In the group (2, 22, 4444), the relationship between the first number x and the subsequent numbers deviates from the general rule of (x, 11x, 1111x) followed by the other groups. While the second number is 11 × 2 = 22, the third number is 2222 × 2 = 4444 instead of 1111 × 2 = 2222. This deviation makes this group the odd one out.

Explanation

The relationship in the given pair is class-member, where the first word belongs to the category denoted by the second word. A lotus is a specific type of flower. Similarly, a peacock is a specific type of bird, which perfectly matches the relationship of the analogy.

Explanation

The logic followed in the number pairs is that the second number is obtained by squaring the first number and then subtracting 2.

Using the first pair: 13² - 2 = 169 - 2 = 167

Applying the same logic to the second pair: 23² - 2 = 529 - 2 = 527

Explanation

The relationship in the pair PIR:OHQ is established by shifting each letter one position backward in alphabetical order. Specifically, P - 1 = O, I - 1 = H, and R - 1 = Q. Applying this same pattern of subtracting 1 from the alphabetical position of each letter to FAX yields F - 1 = E, A - 1 = Z, and X - 1 = W, which results in the pair FAX:EZW.

Explanation

The pair Rabbit-Herbivorous follows the order of Animal-Dietary habit, which is the reverse of the Dietary habit-Animal order followed in the other pairs.

Explanation

The relation in the given sets of numbers is that the second number is the square of the first number. In the pair 2-12, the square of the first number, 2, is 4, whereas the given second number is 12. Since this pair does not follow the squaring logic, it is the odd one out.

Explanation

By converting the letters to their positional values in the English alphabet, D is the 4th letter and G is the 7th letter. The sum of their positions is 4 + 7 = 11, which is an odd number. Additionally, the letters in DG have different parities because 4 is even and 7 is odd. For all the other alternatives, the sum of the letter positions is an even number, and both letters within each pair share the same parity.

Explanation

To arrange the words in alphabetical order as they appear in a dictionary, we compare them letter by letter from left to right.

All the given words begin with the letter C. Comparing the second letter of each word, we find that Cigar and Cinema have the letter i, while Clause, Clever, and Client have the letter l. Since i comes before l in the alphabet, the first word must be either Cigar or Cinema.

Next, comparing the third letter of these two words, Cigar has the letter g and Cinema has the letter n. Since g precedes n in the alphabet, Cigar is the word that appears first in the dictionary.

Explanation

The pattern in the given series follows the logic where each successive term is obtained by multiplying the previous term by 2 and then adding a progressively increasing integer starting from 1.

The step-by-step calculations are:

First term = 34 Second term = 34 × 2 + 1 = 69 Third term = 69 × 2 + 2 = 140 Fourth term = 140 × 2 + 3 = 283 Fifth term = 283 × 2 + 4 = 570 Sixth term = 570 × 2 + 5 = 1145

Explanation

The given series follows a dual pattern where the first letters increase by two positions in alphabetical order and the second letters decrease by two positions.

First letters: C (3) → E (5) → G (7) → I (9) → K (11) Second letters: X (24) → V (22) → T (20) → R (18) → P (16)

Additionally, each pair consists of letters that are exact opposites in alphabetical order, meaning their positions from the beginning and the end of the alphabet sum to 27. Following this logic, the next term in the series is KP.

Explanation

After interchanging positions, Ajay occupies Rahul's original position, which is 19th from the top. Since Ajay is also 28th from the bottom in this new position, the total number of boys in the row is 19 + 28 - 1 = 46.

Explanation

The word Like contains the letter k, which is not present in the given word Liabilities. Since this letter is missing from the original word, Like cannot be formed.

Explanation

The code for each word is generated by replacing each letter with its corresponding position in the English alphabetical order (A = 1, B = 2, C = 3, ..., Z = 26) and concatenating them.

In the word HARMS, the positions of the letters are H = 8, A = 1, R = 18, M = 13, and S = 19. Combining these numbers sequentially gives 81181319.

In the word FLUTE, the positions of the letters are F = 6, L = 12, U = 21, T = 20, and E = 5. Combining these numbers sequentially gives 61221205.

Applying this same logic to the word WOUND, the alphabetical positions of the letters are W = 23, O = 15, U = 21, N = 14, and D = 4. Concatenating these numerical values in sequence results in 231521144.

Explanation

According to the code language: '÷' represents '+' '-' represents '×' '+' represents '÷' '×' represents '-'

Substituting these operators into the given expression: 8 + 14 × 20 ÷ 5 - 2

Applying the BODMAS rule to solve the expression: First, perform the division: 20 ÷ 5 = 4

The expression becomes: 8 + 14 × 4 - 2

Next, perform the multiplication: 14 × 4 = 56

The expression becomes: 8 + 56 - 2

Finally, perform the addition and subtraction: 64 - 2 = 62

Explanation

By interchanging the signs + and x, the equation becomes 12 - 6 + 5 x 20 / 4 = 31. Following the BODMAS rule, this simplifies to 12 - 6 + 5 x 5 = 12 - 6 + 25 = 6 + 25 = 31, which makes the equation correct.

Explanation

The operation * is defined as a * b = - (a / b). Applying this logic, we get 70 * 10 = - (70 / 10) = -7, and similarly, 80 * 1 = - (80 / 1) = -80.

Explanation

The given sequence follows a pattern where a pair of lowercase letters moves one position to the left in each subsequent term, while the remaining characters are uppercase X and Y.

Additionally, the arrangement of this lowercase pair alternates between xy and yx at each step.

In the first term, xy is at the seventh and eighth positions. In the second term, yx is at the sixth and seventh positions. In the third term, xy is at the fifth and sixth positions. In the fourth term, yx is at the fourth and fifth positions. In the fifth term, xy is at the third and fourth positions.

Following this pattern, the next term must have the lowercase pair yx at the second and third positions, while the remaining positions are filled with uppercase X and Y in their corresponding order. This results in the term XyxYXYXY.

Explanation

Let the starting point of both trucks at the warehouse be represented as the coordinate origin (0, 0), where the positive y-axis represents North and the positive x-axis represents East.

Truck A moves 6 km North to (0, 6) and then turns right to go 4 km East, reaching the final coordinate of (4, 6).

Truck B moves 9 km East to (9, 0), then turns North to go 6 km to reach (9, 6), and finally turns right to go 4 km East, reaching the final coordinate of (13, 6).

Both trucks are at the same latitude of 6 km North from the origin. The distance between them along the East-West axis is the difference in their x-coordinates, which is 13 - 4 = 9 km. Since the x-coordinate of Truck B is greater than that of Truck A, Truck B is located 9 km East of Truck A.

Explanation

Statement I states that the set of mirrors and the set of glass are completely disjoint. Statement II states that the set of reflective items and the set of mirrors are also completely disjoint. Both glass and reflective items share a disjoint relation with mirrors, but there is no direct logical relation established between glass and reflective items themselves. They can be completely separate, partially overlapping, or one can be a subset of the other. Because no definite relationship can be established between glass and reflective items, neither the conclusion that all glass are reflective nor the conclusion that all reflective are glass logically follows from the premises.

Explanation

The series is formed by applying a consistent decreasing pattern to the alphabetical positions of each letter in the terms.

For the first letter of each term, the position in the alphabet decreases by 3: N (14) - 3 = K (11) K (11) - 3 = H (8) H (8) - 3 = E (5) E (5) - 3 = B (2)

For the second letter of each term, the position in the alphabet decreases by 2: I (9) - 2 = G (7) G (7) - 2 = E (5) E (5) - 2 = C (3) C (3) - 2 = A (1)

For the third letter of each term, the position in the alphabet decreases by 1: P (16) - 1 = O (15) O (15) - 1 = N (14) N (14) - 1 = M (13) M (13) - 1 = L (12)

Combining these letters yields BAL.

Explanation

The given number series decreases by a constant difference of 9 between consecutive terms.

146 - 9 = 137 137 - 9 = 128 128 - 9 = 119 119 - 9 = 110 110 - 9 = 101

Applying this pattern, subtracting 9 from 128 yields 119.

Explanation

In the group (38, 36, 32), the difference between the first and second number is 2 (38 - 36 = 2), and the difference between the second and third number is 4 (36 - 32 = 4). This pattern deviates from the other groups, where the difference between the first and second number is 2, but the difference between the second and third number is 6, corresponding to subtracting 2 and 8 from the first number respectively.

Explanation

The relationship in the given pair is Unit : Physical Quantity. Just as Pascal is the SI unit of Pressure, Joule is the SI unit of Work. Therefore, the pair Joule : Work perfectly maintains the same logical relationship.

Explanation

The relationship between the first pair of numbers is based on the cyclic rearrangement of their digits. In the number 563, the digits are shifted one position to the left, with the first digit moving to the unit place. This means the first digit 5 becomes the last digit, the second digit 6 becomes the first digit, and the third digit 3 becomes the middle digit, transforming 563 into 635.

Following the same cyclic shifting pattern for 894: The first digit 8 moves to the unit place. The second digit 9 moves to the hundred place. The third digit 4 moves to the tens place.

This cyclic rearrangement of digits transforms 894 into 948.

Explanation

The relationship between the first letter group MOK and the second group KLG is determined by subtracting 2, 3, and 4 from the alphabetical positions of each letter respectively:

M (13) - 2 = K (11) O (15) - 3 = L (12) K (11) - 4 = G (7)

Applying this same pattern of subtracting 2, 3, and 4 to the letter group FIM yields:

F (6) - 2 = D (4) I (9) - 3 = F (6) M (13) - 4 = I (9)

This results in the letter pair FIM:DFI, which follows the identical logic.

Explanation

A rectangle is a quadrilateral, which by definition has four sides and four angles. The given pair associates a rectangle with the number three, which is incorrect.

Explanation

The pair 3-39 deviates from the standard relation where the second number is the square of the first number, defined by the formula y = x². For the first number 3, the square is 3² = 9, which is not equal to 39. This makes it the odd one out among the given alternatives.

Explanation

The letters in KMP have alphabetical positions of 11, 13, and 16. The difference between the first and second letter is +2, while the difference between the second and third letter is +3. This pattern of +2 and +3 differs from the consistent +2 difference maintained between all consecutive letters in the other groups.

Explanation

To arrange the words in alphabetical order as they appear in a dictionary, compare them letter by letter from left to right.

Comparing the first letter, all words start with S.

Comparing the second letter, Soften has o, while Status, Sterile, Sterilize, and Stick have t. Since o comes before t, Soften (1) is the first word.

Comparing the third letter of the remaining words, Status has a, Sterile and Sterilize have e, and Stick has i. Since a comes before e, and e comes before i, Status (5) is the second word, followed by the two words starting with Ste, and Stick (3) is the last word.

Comparing Sterile (4) and Sterilize (2), both share the first seven letters S-t-e-r-i-l-e. Since Sterile ends there, it is shorter and comes before Sterilize, which has additional letters. Thus, Sterile (4) is third and Sterilize (2) is fourth.

This gives the sequence 1, 5, 4, 2, 3.

Explanation

The given series follows a pattern where the difference between consecutive terms increases by 1 at each step.

First term: 23 Second term: 23 + 5 = 28 Third term: 28 + 6 = 34 Fourth term: 34 + 7 = 41 Fifth term: 41 + 8 = 49

Following this progression, the next number in the series is obtained by adding 9 to the preceding term: 49 + 9 = 58