SSC CHSL Tier 1 2012 General Intelligence & Reasoning Questions with Solutions

Explanation

Comparing the words alphabetically, the first letter is C for all. Sorting by the second letter, the group containing Competition, Convention, and Countryside begins with Co, which comes before the Cu in Culmination and Curriculum.

To sort the Co group, comparing the third letters m, n, and u puts Competition (1) first, followed by Convention (3), and then Countryside (2).

To sort the Cu group, comparing the third letters l and r puts Culmination (5) before Curriculum (4).

Arranging all the words in this sequence gives the dictionary order 1, 3, 2, 5, 4.

Explanation

The series is formed by consecutive English alphabet letters at odd positions.

The first term ACE consists of positions 1, 3, and 5. The second term GIK consists of positions 7, 9, and 11. The third term MOQ consists of positions 13, 15, and 17.

Following this pattern of consecutive odd numbers, the next term must consist of the 19th, 21st, and 23rd letters of the alphabet, which correspond to S, U, and W.

Explanation

The given series follows a pattern where the difference between consecutive terms increases by 2: 6 - 2 = 4 12 - 6 = 6 20 - 12 = 8

Following this pattern, the next difference must be 10: 20 + 10 = 30

We can verify the subsequent terms with this logic: 30 + 12 = 42 42 + 14 = 56 56 + 16 = 72 72 + 18 = 90

Alternatively, each term can be expressed as n(n + 1) for consecutive integers starting from n = 1: 1 × 2 = 2 2 × 3 = 6 3 × 4 = 12 4 × 5 = 20 5 × 6 = 30 6 × 7 = 42 7 × 8 = 56 8 × 9 = 72 9 × 10 = 90

Explanation

The given series consists of the squares of numbers starting from 1, where each subsequent base increases by 4.

1st term: 1² = 1 2nd term: (1 + 4)² = 5² = 25 3rd term: (5 + 4)² = 9² = 81

Following this arithmetic progression for the bases, the next base is 9 + 4 = 13.

4th term: 13² = 169

Explanation

The given letter series can be completed using the letters of option B (seinu) in the five gaps to form the 20-letter sequence: "a u l s n e i o e a i v o l n o e u u a". When divided into four groups of five letters each, we get:

1. a u l s n (contains consonants: l, s, n)
2. e i o e a (contains only vowels)
3. i v o l n (contains consonants: v, l, n)
4. o e u u a (contains only vowels)

This forms a perfect alternating pattern of groups containing consonants and groups containing only vowels.

Explanation

The total number of smaller cubes obtained is determined by dividing the volume of the larger cube by the volume of a single smaller cube.

The volume of a cube is calculated using the formula: V = s³

where s is the side length of the cube.

For the larger cube with a side length of 4: Volume of larger cube = 4³ = 64

For each smaller cube with a side length of 1: Volume of smaller cube = 1³ = 1

To find the total number of smaller cubes: Number of cubes = Volume of larger cube ÷ Volume of smaller cube = 64 ÷ 1 = 64

Explanation

The population growth of the rabbits is represented by the formula:

P = P₀ × 2ⁿ

where P₀ is the initial population, and n is the number of doubling periods.

Given: Initial population P₀ = 2 Doubling period = 2 months Total time = 6 months

The number of doubling periods is:

n = 6 / 2 = 3

Substituting these values into the formula yields:

P = 2 × 2³ = 2 × 8 = 16

Explanation

The only daughter of the woman's father is the woman herself. Since the woman states that this only daughter is the man's wife, she is referring to herself as his wife. Therefore, the man is the husband of the woman.

Explanation

The word ROPE cannot be formed using the letters of CATASTROPHIC because it contains the letter E, which is not present in the word CATASTROPHIC.

Explanation

The word NATION cannot be formed because it requires two N letters, whereas the given word OPERATION contains only one letter N.

Explanation

By comparing the letters of the original word GIGANTIC to its coded form GIGTANCI, we can map the transition of each letter position from 1 to 8:

Original word: G(1) I(2) G(3) A(4) N(5) T(6) I(7) C(8) Coded word: G(1) I(2) G(3) T(6) A(4) N(5) C(8) I(7)

This reveals that the position order transforms from 1 2 3 4 5 6 7 8 to 1 2 3 6 4 5 8 7. Applying this exact index rearrangement to the word MIRACLES:

Original word: M(1) I(2) R(3) A(4) C(5) L(6) E(7) S(8) Rearranged word: M(1) I(2) R(3) L(6) A(4) C(5) S(8) E(7)

Following this arrangement, we get the coded word MIRLACSE.

Explanation

The coding pattern shifts each letter of the word by +1 position in the English alphabetical order: P + 1 = Q A + 1 = B P + 1 = Q E + 1 = F R + 1 = S

Applying this +1 alphabetical shift pattern to APEPR: A + 1 = B P + 1 = Q E + 1 = F P + 1 = Q R + 1 = S

This yields the coded sequence BQFQS (option C).

Explanation

In this code, each letter of the word is replaced by the letter immediately preceding it in the English alphabet.

For RAJAN: R becomes Q A becomes Z J becomes I A becomes Z N becomes M

Using the same rule for JARAN: J becomes I A becomes Z R becomes Q A becomes Z N becomes M

The coded word is IZQZM.

Explanation

The relationship between the numbers in each set is that the fourth number is the product of the first three numbers.

Set 1: 3 × 5 × 7 = 105 Set 2: 4 × 6 × 8 = 192 Set 3: 9 × 2 × 3 = 54

Explanation

The pattern in each column of the grid shows that the product of the first three numbers is equal to the fourth number at the bottom.

For the first column: 5 × 7 × 6 = 210

For the second column: 7 × 9 × 3 = 189

Following the same pattern for the third column: 4 × 8 × 7 = 224

Explanation

The sequence is based on a combination of two separate patterns: a decreasing alphabetical order for letters and a doubling pattern for numbers.

For the letters, the pattern moves in reverse alphabetical order: F, E, D, C, B.

For the numbers, each succeeding number is obtained by multiplying the preceding number by 2: 2 × 2 = 4 4 × 2 = 8 8 × 2 = 16 16 × 2 = 32

Combining the letter and number patterns gives the sequence: F2, E4, D8, C16, B32. The missing term is E4.

Explanation

The given sequence is an alternating series consisting of two separate patterns for the odd and even positions.

The even-positioned terms are cubes of numbers that decrease by 3 at each step: Second term: 4³ = 64 Fourth term: (4 - 3)³ = 1³ = 1 Sixth term: (1 - 3)³ = (-2)³ = -8 Eighth term: (-2 - 3)³ = (-5)³ = -125

The odd-positioned terms are squares of numbers that also decrease by 3 at each step: First term: 5² = 25 Third term: (5 - 3)² = 2² = 4 Fifth term: (2 - 3)² = (-1)² = 1 Seventh term: (-1 - 3)² = (-4)² = 16

Explanation

The sequence is defined by the factorial of the given odd numbers, where the factorial of a positive integer n, denoted by n!, is the product of all positive integers less than or equal to n.

Using this formula: 1! = 1 3! = 3 × 2 × 1 = 6 5! = 5 × 4 × 3 × 2 × 1 = 120

Following this pattern for the number 7: 7! = 7 × 6 × 5 × 4 × 3 × 2 × 1 = 5040

Explanation

According to the operator substitution rules: The multiplication sign × is replaced by the subtraction sign -. The division sign ÷ is replaced by the addition sign +. The addition sign + is replaced by the division sign ÷. The subtraction sign - is replaced by the multiplication sign ×.

Applying these substitutions to the equation in option C: 8 ÷ 10 - 3 + 5 × 6 = 8

The equation becomes: 8 + 10 × 3 ÷ 5 - 6 = 8

Applying the BODMAS order of operations: First, perform the division: 3 ÷ 5 = 3/5

Next, perform the multiplication: 10 × (3/5) = 6

Now, substitute this back into the expression: 8 + 6 - 6

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

Since the left-hand side is equal to the right-hand side, the equation is correct.

Explanation

When two objects move towards each other, their relative speed is the sum of their individual speeds.

Relative speed of A and B = 5 km/hr + 7 km/hr = 12 km/hr

The total distance covered by both in one hour is: Distance = Speed × Time = 12 km/hr × 1 hr = 12 km

Since the total length of the road is 15 km, the distance remaining between them after one hour is: Remaining distance = Total distance - Distance covered = 15 km - 12 km = 3 km

Explanation

To determine the vertical order of the five books from top to bottom, we can sequentialize the relative positions step by step. First, since C is lying on D, C is above D. Second, since D is lying above K, K is placed below D, giving the sequence C, D, K. Third, since E is under K, E is placed below K, giving the sequence C, D, K, E. Fourth, since F is lying under E, F is placed below E, resulting in the final top-to-bottom sequence of C, D, K, E, F. This places F at the very bottom of the pile.

Explanation

Let the set of authors be A, learned people be L, and doctors be D.

The first statement, Authors are learned people, means that all authors are learned, which can be represented as A is a subset of L.

The second statement, Some doctors are authors, means that there is a non-empty intersection between the set of doctors and the set of authors, meaning D intersection A is not empty.

Since A is entirely contained within L, any element in the intersection of D and A must also be in L. This means that the intersection of D and L is also not empty.

Thus, some doctors are learned people, which makes Conclusion I valid.

Similarly, because the intersection of D and L is not empty, there are some learned people who are also doctors, which makes Conclusion II valid.

Explanation

The first statement indicates a relationship between business people and tension, while the second statement links tension to the development of heart diseases. This sequence of premises does not mean that every business person who suffers from tension will inevitably become a heart patient, making conclusion I invalid. Additionally, the premises do not state that tension is the exclusive cause of heart diseases or that business people are the only individuals who experience tension, meaning conclusion II cannot be inferred. Since neither statement supports the absolute claims made in the conclusions, neither conclusion follows.

Explanation

The statement highlights that children must be kept away from television to help them concentrate on their studies. This directly implies that watching television acts as a distraction and interferes with their ability to study, meaning it has an adverse influence on their studies. Therefore, conclusion I logically flows from the premise. Conclusion II goes beyond the scope of the statement by introducing the concept of a bright future, which cannot be deduced from the given information. Thus, only conclusion I follows.

Explanation

The given sequence is 419, 406, 381, 340, ?. Calculating the differences between consecutive terms: 419 - 406 = 13 406 - 381 = 25 381 - 340 = 41

Now, calculating the differences between these first-order differences: 25 - 13 = 12 41 - 25 = 16

The second-order differences are increasing by 4 (12, 16). Following this arithmetic progression, the next second-order difference is: 16 + 4 = 20

This means the next first-order difference must be: 41 + 20 = 61

Subtracting this difference from the last term of the series gives: 340 - 61 = 279

Explanation

The chronological order represents the sequential stages involved in the filmmaking process. The process starts with a Story (3), which is then developed into a structured Script (5). Following the script writing, the Dialogues (1) are written for the actors. With the dialogue and script finalized, the film goes into the Shooting (2) phase. Once the shoot is complete, the captured footage undergoes Editing (4) to piece the scenes together. The edited film is then shown in a Preview (6) to a restricted audience or board for feedback. Finally, the finished movie is released for public Screening (7) in theatres. This chronological progression gives the logical sequence 3-5-1-2-4-6-7.

Explanation

To arrange the words in alphabetical order as in a dictionary, we compare them letter by letter from left to right. All four words share the common prefix Terr.

Comparing the fifth letters, Terrace and Terrain have a, Territory has i, and Terror has o. Since a comes before i and o, Terrace and Terrain are placed first. Between these two, the sixth letter c in Terrace precedes the letter i in Terrain, ordering them as Terrace (4) followed by Terrain (2).

For the remaining two words, the fifth letter i in Territory comes before the letter o in Terror, placing Territory (1) before Terror (3).

Explanation

To arrange the words in alphabetical order as they would appear in a dictionary, we compare their letters from left to right.

Among the starting letters F, O, and T, the letter F comes first. Comparing the two words starting with F, which are Five and Four, the second letter i in Five precedes the second letter o in Four, so Five is placed before Four.

Next is the letter O, which gives the word One.

Finally, for the words starting with T, which are Three and Two, comparing their second letters shows that h in Three comes before w in Two, placing Three before Two.

This gives the complete dictionary order as Five, Four, One, Three, Two, which corresponds to the numerical sequence 5, 4, 1, 3, 2.

Explanation

Pray is a verb that denotes the action of worshipping, whereas the other options represent physical places of worship. This grammatical and conceptual distinction makes it the odd word among the choices.

Explanation

The sum of the individual digits for each of the other numbers in the given set is equal to 10: 3 + 5 + 2 = 10 1 + 6 + 3 = 10 2 + 5 + 3 = 10 8 + 2 + 0 = 10 4 + 5 + 1 = 10 2 + 7 + 1 = 10

For 522, the sum of the digits is 5 + 2 + 2 = 9, which makes it the odd number out.

Explanation

All the numbers in the given sequence except 199 are divisible by 11. Specifically, they represent a series of consecutive odd multiples of 11: 11 × 11 = 121 11 × 13 = 143 11 × 15 = 165 11 × 17 = 187 11 × 19 = 209

In contrast, 199 is not divisible by 11, which makes it the odd number in the group.

Explanation

A thermometer is an instrument used to measure and record temperature. Similarly, a cardiograph is a medical instrument used to detect and record the activity, movements, and electrical impulses of the heart.

Explanation

The mathematical logic behind the analogy is x² + 3.

Applying this to the first pair where x = 2: 2² + 3 = 4 + 3 = 7

Applying the same logic to the second pair where x = 6: 6² + 3 = 36 + 3 = 39

Explanation

The relationship in the first pair is based on consecutive prime numbers. The number 2 is the first prime number, and the next consecutive prime number is 3.

Applying the same logic to the second pair, 11 is a prime number, and the next consecutive prime number is 13.

Explanation

For a mathematical proportion of the form a : b :: c : d, the product of the extremes equals the product of the means:

a × d = b × c

Substituting the given values where a = 1/3, b = 3, and c = 3:

(1/3) × d = 3 × 3

(1/3) × d = 9

d = 9 × 3

d = 27

Explanation

A buffoon is a comic actor or clown who performs and provides amusement in a drama. In the same way, a joker is a comic entertainer or clown whose performance is a characteristic feature of a circus. This analogy represents the relationship between a specific type of humorous performer and the performance setting or medium in which they entertain.

Explanation

This is an analogy based on the primary function of plant organs. The primary function of a leaf is to perform photosynthesis, which is the process of synthesizing food using sunlight. Similarly, the primary function of roots is absorption, which involves taking in water and essential dissolved minerals from the soil to sustain the plant.

Explanation

The first and fourth letters of each group follow the consecutive sequence of English vowels, which is A, E, I, O, U. Therefore, the vowels A and A in the first term transition to E and E in the second term, then to I and I in the third term, and finally to O and O in the fourth term.

The second and third letters of each group increase by 2 positions in alphabetical order. For the second letter, the progression is P (+2) to R, R (+2) to T, and T (+2) to V. For the third letter, the progression is Q (+2) to S, S (+2) to U, and U (+2) to W.

Combining these two patterns for the fourth term gives OVWO.

Explanation

The relationship between the letters is based on opposite positions in the English alphabet, where the sum of the numerical positions of the paired letters from the beginning and the end of the alphabet is 27.

In BDFH to YWUS, the letter B (2nd from the beginning) is paired with Y (2nd from the end), D (4th) with W (4th from the end), F (6th) with U (6th from the end), and H (8th) with S (8th from the end). Applying this rule to GIKM, G (7th) corresponds to T (20th), I (9th) corresponds to R (18th), K (11th) corresponds to P (16th), and M (13th) corresponds to N (14th).

Explanation

The letter pair NO is different because it contains a consonant, N, whereas all other pairs consist exclusively of vowels.

Explanation

The letters in UTV do not follow the consecutive forward alphabetical order. In the standard English alphabet, the correct consecutive sequence is T, U, V, whereas this group is written out of order.

Explanation

Crab is an invertebrate belonging to the phylum Arthropoda, characterized by a hard exoskeleton and the absence of a backbone, whereas the other organisms are all vertebrates.

Explanation

A calculator is a standalone, self-contained electronic device that operates independently with its own integrated power source, processor, input interface, and display screen. It is not a computer peripheral, meaning it does not require a connection to a computer system to perform its functions.

Explanation

The differences between consecutive terms in the series follow the pattern of squares of consecutive natural numbers starting from 2.

The sequence of terms is generated as follows: 2 + 2² = 6 6 + 3² = 15 15 + 4² = 31 31 + 5² = 56 56 + 6² = 92

According to this pattern, the sixth term should be 92. Since the given term is 93, it does not fit the series and is the odd number.

Explanation

Among the given numbers, 21 is an odd number while all the other numbers (10, 14, 16, 18, and 24) are even numbers because they are completely divisible by 2. This makes 21 the odd one out in the sequence.

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 five words begin with the letter C.

Comparing the second letters, the words are split into two groups: those starting with Co (Competition, Countryside, Convention) and those starting with Cu (Curriculum, Culmination). Since o comes before u, the Co words will appear first.

Within the Co group, we compare the third letters m, n, and u. Since m comes before n, and n comes before u, the order is Competition, Convention, and Countryside, which corresponds to 1, 3, 2.

Within the Cu group, we compare the third letters r and l. Since l comes before r, the order is Culmination followed by Curriculum, which corresponds to 5, 4.

Combining the two groups gives the final dictionary order: 1, 3, 2, 5, 4.

Explanation

To arrange the given words in alphabetical dictionary order, we compare their letters from left to right.

All five words begin with the prefix Bl.

Comparing the third letter of each word: In Black (1), the third letter is a, which comes first alphabetically. In Bloat (4), Block (5), and Blow (2), the third letter is o. In Blue (3), the third letter is u.

Since a comes before o, and o comes before u, Black (1) is placed first and Blue (3) is placed last.

To determine the order of the three words starting with Blo, we compare their fourth letters: In Bloat (4), the fourth letter is a. In Block (5), the fourth letter is c. In Blow (2), the fourth letter is w.

Alphabetically, a comes before c, which comes before w. This gives the relative order Bloat (4), Block (5), and Blow (2).

Combining these steps gives the final dictionary sequence 1, 4, 5, 2, 3.

Explanation

The terms in the series represent the squares of numbers forming an arithmetic progression with a common difference of 4.

The first term is 1² = 1. The second term is 5² = 25. The third term is 9² = 81.

The difference between successive bases is 4 (5 - 1 = 4 and 9 - 5 = 4). Following this pattern, the base for the next term is 9 + 4 = 13.

The next term in the series is 13² = 169.

Explanation

The position values of the letters in the English alphabet show a continuous addition of 2.

The first group ACE consists of letters at positions 1, 3, and 5. The second group GIK consists of letters at positions 7, 9, and 11. The third group MCQ consists of letters at positions 13, 15, and 17.

Following this pattern of adding 2 to the position value of the preceding letter, the next term begins at position 17 + 2 = 19 (S), followed by 19 + 2 = 21 (U) and 21 + 2 = 23 (W), yielding SUW.

Explanation

The given sequence is formed by the formula n × (n + 1), starting from n = 1.

For n = 1, the term is 1 × 2 = 2. For n = 2, the term is 2 × 3 = 6. For n = 3, the term is 3 × 4 = 12. For n = 4, the term is 4 × 5 = 20. For n = 5, the term is 5 × 6 = 30. For n = 6, the term is 6 × 7 = 42. For n = 7, the term is 7 × 8 = 56. For n = 8, the term is 8 × 9 = 72. For n = 9, the term is 9 × 10 = 90.

The number 7 in the series is a typographical error representing the missing term.

Alternatively, the difference between consecutive terms increases by 2 each time. The first few differences are: 6 - 2 = 4 12 - 6 = 6 20 - 12 = 8

Following this pattern, the next difference must be 10. Adding 10 to 20 yields 30.

The subsequent terms are verified by adding consecutive even numbers: 30 + 12 = 42 42 + 14 = 56 56 + 16 = 72 72 + 18 = 90