RRB NTPC CBT 1 2016 General Intelligence & Reasoning Questions with Solutions

Explanation

The total number of people specified in the given groups is 20 + 30 + 15 + 25 + 5 = 95. Therefore, the remaining number of people who wanted to see only bear is 100 - 95 = 5.

The total number of people who wanted to see tiger includes those who wanted to see only tiger and those who wanted to see both bison and tiger, which equals 25 + 30 = 55.

The required ratio of people who wanted to see tiger to those who wanted to see bear is 55 / 5 = 11 / 1.

Explanation

The letters of the word PQRST are rearranged based on their original positions (1, 2, 3, 4, 5) into the order 4, 1, 5, 3, 2 to form SPTRQ.

Applying the same positional transformation to HIJKL: 4th position: K 1st position: H 5th position: L 3rd position: J 2nd position: I

Combining these in order yields KHLJI.

Explanation

From the given statements, some blues are purples and all purples are red. Combining these two premises shows that the blues that overlap with purples must also be red, which directly implies that some reds are blues. Thus, Conclusion I logically follows. Regarding Conclusion II, while all oranges are reds and some reds are violets, no direct connection or definite overlap is established between oranges and violets, so Conclusion II does not follow.

Explanation

The pattern follows alternating operations of -2 and +2 on the alphabetical positions of each letter.

Applying this pattern to JAGUAR: J (-2) = H, A (+2) = C, G (-2) = E, U (+2) = W, A (-2) = Y, R (+2) = T

Applying the same pattern to ELEPHANT: E (-2) = C L (+2) = N E (-2) = C P (+2) = R H (-2) = F A (+2) = C N (-2) = L T (+2) = V

Explanation

The given sequence is an alternating series consisting of two interleaved sub-sequences at odd and even positions:

Odd positions (1st, 3rd, 5th, 7th terms): 4, 8, 12, ... (an arithmetic progression adding 4 each time) Even positions (2nd, 4th, 6th terms): 8, 16, 24, ... (an arithmetic progression adding 8 each time)

The required 7th term belongs to the first sub-sequence, so adding 4 to the 5th term (12) gives 12 + 4 = 16.

Explanation

Comparing 'book is big' (756) and 'big is story' (764), the common words are 'big' and 'is', corresponding to common digits 7 and 6. This leaves 'book' = 5 and 'story' = 4.

In 'story book is interesting' (4356), the digit 6 appears in all three statements, which means 'is' = 6. Substituting 'story' = 4, 'book' = 5, and 'is' = 6 into 'story book is interesting' leaves the remaining digit 3 for 'interesting'.

Explanation

The jumbled letters NILE rearrange to form the word LINE, which is a one-dimensional geometric figure. The other letter sets rearrange to form two-dimensional closed polygons.

Explanation

Each letter in the word is shifted forward by an increasing sequence of odd numbers (+3, +5, +7, +9):

H (+3) = K E (+5) = J A (+7) = H R (+9) = A

Applying the same pattern to MILK: M (+3) = P I (+5) = N L (+7) = S K (+9) = T

Explanation

Rhythm is the fundamental structural pattern and governing element upon which music is composed and executed. In the same way, a design is the underlying plan and structural framework upon which a building is constructed.

Explanation

Combining the first two statements using standard syllogism: "All birds are trees" (A ⊂ B) and "All trees are papers" (B ⊂ C) directly yields "All birds are papers" (A ⊂ C) by transitivity. This makes Conclusion I valid.

For Conclusion II, "Some papers are books" only establishes an intersection between papers and books, which does not guarantee any overlap between birds and books. Hence, Conclusion II does not logically follow.

Explanation

Dilip is the grandfather of Rakesh and father of Arun, making Dilip male. Arun is the father of Rakesh and husband of Eniya, making Arun male. Badhri is the brother of Eniya's husband (Arun), making Badhri male. Rakesh is the brother of Chithra, making Rakesh male. Eniya (the mother) and Chithra (the sister) are the female members. This gives four male members in the family: Dilip, Arun, Badhri, and Rakesh.

Explanation

Dilip belongs to the first generation as the father of Arun. Eniya is married to Arun, making Eniya the mother of Chithra and Rakesh. Badhri is the brother of Arun, so Arun and Badhri are brothers to each other. Rakesh is the brother of Chithra. This establishes Arun, Badhri, and Rakesh as the three brothers in the family.

Explanation

Dilip is the father of Arun and grandfather of Rakesh. Arun is married to Eniya, making Arun the husband and Eniya the mother in the family. Badhri is the brother of Arun. Together, Dilip and Arun are the two fathers, while Badhri, Arun, and Rakesh represent the three brothers. Since Eniya and Arun are the parents of Rakesh and Chithra, Rakesh is Eniya's son.

Explanation

A horse is a domesticated animal reared by humans for riding, labor, and transportation, whereas the rest are wild animals that live in their natural jungle or savannah habitats.

Explanation

11 and 13 are consecutive prime numbers. Following the same pattern, the prime number immediately after 17 is 19. Alternatively, adding 2 to the first term yields the second term (11 + 2 = 13), so applying the same operation to 17 gives 19 (17 + 2 = 19).

Explanation

Using the principle of inclusion-exclusion for three sets, the total number of students who know at least one language is:

n(E ∪ F ∪ H) = n(E) + n(F) + n(H) - n(E ∩ F) - n(F ∩ H) - n(E ∩ H) + n(E ∩ F ∩ H)

n(E ∪ F ∪ H) = 3000 + 2000 + 500 - 1500 - 300 - 200 + 50 = 3550

The number of students who do not know any of the three languages is obtained by subtracting the number of students who know at least one language from the total school strength:

4000 - 3550 = 450

Explanation

The number of students who know exactly two languages is calculated by subtracting those who know all three languages from each pairwise intersection:

Only French and English = 1500 - 50 = 1450 Only French and Hindi = 300 - 50 = 250 Only English and Hindi = 200 - 50 = 150

Total knowing only two languages = 1450 + 250 + 150 = 1850.

Explanation

By the Principle of Inclusion-Exclusion, the number of students who know at least one language is calculated as:

n(E ∪ F ∪ H) = n(E) + n(F) + n(H) - n(E ∩ F) - n(F ∩ H) - n(E ∩ H) + n(E ∩ F ∩ H)

Substituting the given values: n(E ∪ F ∪ H) = 3000 + 2000 + 500 - 1500 - 300 - 200 + 50 = 3550

Explanation

Substituting the mathematical operators into the given expression based on the assigned meanings:

8 when 12 will 16 she 2 come 10 = 8 × 12 + 16 ÷ 2 − 10

Applying the order of operations (BODMAS/PEMDAS):

Division and Multiplication: 16 ÷ 2 = 8 8 × 12 = 96

Addition and Subtraction: 96 + 8 − 10 = 104 − 10 = 94

Explanation

Rearranging the jumbled letters IKNTN forms the word THINK, which represents a cognitive or mental process, whereas the other sets form words representing physical senses.

Explanation

Each letter of the decoded word is the letter that lies alphabetically directly between each pair of consecutive letters in the code:

Pair FH gives G Pair NP gives O Pair KM gives L Pair EG gives F

Applying the same rule to decode the given string:

Pair RT gives S Pair SU gives T Pair HJ gives I Pair BD gives C Pair JL gives K

Combining the resulting letters yields STICK.

Explanation

The pattern uses the standard positional values of the English alphabet (A = 1, B = 2, ..., Z = 26). For a three-letter word, the numerical value is obtained by adding the positions of the first two letters and subtracting the position of the third letter: Value = (1st letter + 2nd letter) - 3rd letter.

For MAN: M(13) + A(1) - N(14) = 14 - 14 = 0.

For SIN: S(19) + I(9) - N(14) = 28 - 14 = 14.

Applying this to HOT: H = 8, O = 15, and T = 20. Value = (8 + 15) - 20 = 23 - 20 = 3.

Explanation

Toes are the individual digits located at the end of a foot. Similarly, fingers are the corresponding digits located at the end of a hand.

Explanation

Mount Everest is the highest peak on Earth. Similarly, Jupiter is the largest planet in the solar system. The analogy connects a superlative entity that holds the top rank in scale to its overarching general category.

Explanation

Replacing the mathematical signs according to the given rules: Replace - with × Replace + with - Replace × with ÷ Replace ÷ with +

The expression 15 - 3 + 10 × 5 ÷ 5 becomes: 15 × 3 - 10 ÷ 5 + 5

Applying the BODMAS order of operations: First, perform division: 10 ÷ 5 = 2 Next, perform multiplication: 15 × 3 = 45 Finally, perform subtraction and addition from left to right: 45 - 2 + 5 = 48

Explanation

This is a direct letter-to-digit substitution cipher where each letter corresponds to a specific digit:

T = 8, A = 4, B = 9, L = 7, E = 3 C = 5, H = 1, I = 6, R = 2

Substituting the digits for each letter in TEACHER: T → 8 E → 3 A → 4 C → 5 H → 1 E → 3 R → 2

Combining these digits gives 8345132.

Explanation

ESCSH rearranges to CHESS, which is an indoor board game played by two players on a checkered board, whereas the other jumbled terms represent outdoor sports played on a field.

Explanation

The Constitution of India came into force on 26th January 1950, making India a sovereign democratic republic. Consequently, 26th January is celebrated every year as Republic Day. While both statements are factually correct, the celebration of Republic Day is the result of the Constitution coming into force, not the underlying reason for choosing that date. The actual reason for choosing 26th January was to commemorate the Purna Swaraj (Complete Independence) declaration made by the Indian National Congress on 26th January 1930.

Explanation

The given mathematical operations are decoded as follows: means × ÷ means + x means -

• means ÷

Substituting these operators into the original expression: 100 - 10 x 1000 ÷ 1000 + 100 x 10 = 100 × 10 - 1000 + 1000 ÷ 100 - 10

Applying BODMAS order of operations: Division: 1000 ÷ 100 = 10 Multiplication: 100 × 10 = 1000 Addition and Subtraction: 1000 - 1000 + 10 - 10 = 0

Explanation

Hot water enhances detergent activity, lowers the surface tension of water, and effectively dissolves oils, grease, and dirt, allowing clothes to be washed more thoroughly. Thus, the statement that clothes are not washed properly in hot water is false. Hard water contains dissolved minerals, particularly calcium and magnesium ions, which makes the statement regarding hard water true.

Explanation

In India, female life expectancy at birth is higher than that of males, primarily due to biological advantages that confer greater immunity and longevity to women. However, the claim that females receive a better diet is false, as social and cultural factors in India often result in gender bias where males receive preferential nutrition and healthcare within households.

Explanation

Milk is the primary raw material from which butter is made. Similarly, paper is the primary raw material from which a book is made.

Explanation

The relationship follows the rule x : x × (next prime number).

In the first pair 5 : 35, the base number is 5, and the prime number immediately following 5 is 7, giving 5 × 7 = 35.

Applying the same pattern, 7 is a prime number and the next prime number after 7 is 11, which gives 7 × 11 = 77.

Explanation

Temperature decreases with increasing altitude in the troposphere at the normal lapse rate of approximately 6.5°C per 1,000 meters. Simla is situated at an elevation of about 2,200 meters above sea level, whereas Delhi lies at an elevation of about 216 meters. Because thinner air at higher altitudes holds less heat, Simla experiences lower temperatures than Delhi, making altitude the direct explanation for the difference in climate.

Explanation

The six family members consist of three males (Dinesh, Raja, Rohan) and three females (Seema, Anitha, Bavya), formed by two married couples (Dinesh-Seema and Raja-Anitha) and two unmarried siblings (Rohan and Bavya).

Assigning the colours to each person: Seema likes Red. Bavya likes Yellow. Rohan likes Pink. Dinesh does not like Blue or White, which leaves Green for Dinesh. Raja does not like White, which leaves Blue for Raja. Anitha is assigned the remaining colour, White.

Explanation

Anitha is married to Raja, which means Raja is Anitha's husband. Seema is Anitha's mother-in-law, so Seema is Raja's mother.

Dinesh is Rohan's father, and Bavya is Rohan's sister. This means Dinesh is the father of Rohan and Bavya.

The family of six consists of three females (Seema, Anitha, and Bavya) and three males (Raja, Dinesh, and Rohan). With two married couples in the family, Dinesh and Seema form the older married couple, while Raja and Anitha form the second couple. Thus, Dinesh and Seema are the parents of Raja, Rohan, and Bavya. Consequently, Rohan is Seema's son.

Explanation

The coding pattern follows the logic: Code = Number of letters in the word - 1.

DRIVER has 6 letters, so its code is 6 - 1 = 5. BELIEVED has 8 letters, so its code is 8 - 1 = 7. EXAMINATION has 11 letters, so its code is 11 - 1 = 10.

Explanation

Unscrambling EAHLTH yields the word HEALTH, which denotes a state of complete physical, mental, and social well-being. The remaining anagrams unscramble into terms that signify illness or medical ailments (disease, illness, and sickness), making HEALTH the only word representing a positive state of physical wellness and the odd one out.

Explanation

The decoding rule subtracts 1 from the alphabetical position of each letter in the coded word (D - 1 = C, I - 1 = H, J - 1 = I, O - 1 = N, B - 1 = A).

Applying the same rule to KBO: K - 1 = J B - 1 = A O - 1 = N

The decoded word is JAN, where the last letter is N.

Explanation

Statement 2 gives "Some tall are peacocks". By the rule of simple conversion for particular affirmative (I-type) propositions, "Some A are B" directly converts to "Some B are A", which yields "Some peacocks are tall". Thus, Conclusion II validly follows.

Conclusion I does not follow because the middle term "tall" is undistributed in both statements, making it impossible to form a valid relation between "birds" and "peacocks".

Explanation

Engineering is the field of study, profession, or practice associated with an engineer. Similarly, Medicine is the field of study, profession, or practice associated with a doctor.

Explanation

Each letter in the pattern is shifted forward by 4 positions in the alphabetical sequence:

G (7) + 4 = 11 → K O (15) + 4 = 19 → S A (1) + 4 = 5 → E T (20) + 4 = 24 → X

Applying the same +4 shift to the word WOLF:

W (23) + 4 = 27 ≡ 1 → A O (15) + 4 = 19 → S L (12) + 4 = 16 → P F (6) + 4 = 10 → J

Explanation

A coin represents a generic physical object or metallic medium used for monetary transactions. Unlike specific monetary units that denote official national currencies, a coin refers broadly to the physical form of money itself rather than a named currency denomination.

Explanation

Substituting the given operator definitions into the expression:

28 Z 7 W 8 X 6 Y 4 = 28 ÷ 7 × 8 - 6 + 4

Applying the BODMAS rule: 28 ÷ 7 = 4 4 × 8 = 32 32 - 6 + 4 = 30

Explanation

Substituting the symbols with their corresponding mathematical operators gives: '>' represents '+' '@' represents '÷' '<' represents '—'

The expression 27 > 81 @ 9 < 6 translates to: 27 + 81 ÷ 9 — 6

Applying the BODMAS rule (Division before Addition and Subtraction): First, perform division: 81 ÷ 9 = 9 Next, perform addition: 27 + 9 = 36 Finally, perform subtraction: 36 — 6 = 30

Explanation

The given analogy follows a pattern where each term is the square of a base number, and the base number increases by 2.

49 = 7² 81 = 9² = (7 + 2)²

Applying the same pattern to the second pair: 100 = 10² (10 + 2)² = 12² = 144

Explanation

Books represent the broad overarching class of bound, written literary works, encompassing all specific genres, forms, and collections of literature.

Explanation

Interchanging the signs + and - along with the numbers 3 and 5 transforms the given equation into:

5 - 3 + 2 = 4

Evaluating the left-hand side: 5 - 3 + 2 = 2 + 2 = 4

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

Explanation

Each letter in the code is represented by adding 6 to its positional value in the English alphabet (A = 1, B = 2, ..., Z = 26).

For MACHINE: M = 13 + 6 = 19 A = 1 + 6 = 7 C = 3 + 6 = 9 H = 8 + 6 = 14 I = 9 + 6 = 15 N = 14 + 6 = 20 E = 5 + 6 = 11

Applying the same rule to DANGER: D = 4 + 6 = 10 A = 1 + 6 = 7 N = 14 + 6 = 20 G = 7 + 6 = 13 E = 5 + 6 = 11 R = 18 + 6 = 24

Explanation

The number of students playing exactly two games is obtained by subtracting the number of students playing all three games from the number of students playing each pair of games.

Students playing only Cricket and Football = 10 - 5 = 5 Students playing only Cricket and Volleyball = 9 - 5 = 4 Students playing only Volleyball and Football = 12 - 5 = 7

Total students playing exactly two games = 5 + 4 + 7 = 16