RRB NTPC CBT 1 2021 General Intelligence & Reasoning Questions with Solutions

Explanation

Arranging the given information in order of height: A > B B > C D is shorter than B but taller than C, which gives B > D > C.

Combining these statements gives the complete order from tallest to shortest: A > B > D > C. From this arrangement, D is directly positioned above C, making D taller than C.

Explanation

In the given pattern, the number represents the alphabetical position of the first letter, and the two letters form a pair of opposite letters whose positional values sum to 27. In 9IH, the positions of I (9) and H (8) sum to 17 instead of 27. The correct opposite pair for I (9) is R (18), making 9IH the odd term.

Explanation

Conclusion I logically follows because X states that her husband will drive her to the Hudson Shopping Mall, confirming she will travel by car rather than on foot. Conclusion II logically follows because X explicitly refers to "My husband", which establishes that she is married. Conclusion IV logically follows because X states she cannot drive because her hand is not in a healthy condition, directly implying that she knows how to drive a car under normal circumstances. Conclusion III does not follow as the statement provides no information about Y's marital status.

Explanation

Since I is J's maternal uncle, I must be the brother of J's mother. The question states that M is I's only sibling, which means J's mother has to be M. Therefore, M is J's mother.

Explanation

The coding pattern is given by the square of the number of letters in the word (n²):

MEN has 3 letters → 3² = 9 WOMEN has 5 letters → 5² = 25

Similarly, CHILDREN has 8 letters: Code = 8² = 64

Explanation

The relation between the first and second number is established by dividing the first number by 14:

4704 ÷ 14 = 336

Applying the same operation to the third number gives:

2590 ÷ 14 = 185

Explanation

Each letter of the given word is coded by shifting it 6 positions backward in the alphabetical order (cycling around from A to Z):

S (19) - 6 = M (13) K (11) - 6 = E (5) I (9) - 6 = C (3) R (18) - 6 = L (12) T (20) - 6 = N (14)

Applying the exact same rule to BLOUSE:

B (2) - 6 = V (22) L (12) - 6 = F (6) O (15) - 6 = I (9) U (21) - 6 = O (15) S (19) - 6 = M (13) E (5) - 6 = Y (25)

This gives the coded word VFIOMY.

Explanation

In standard alphabetical order, O is the 15th letter. When the English alphabet is written in reverse order (Z to A), moving to the right of a letter corresponds to moving towards A, which means decreasing the position number in standard order.

Position = 15 - 12 = 3

The 3rd letter in standard alphabetical order is C.

Explanation

The series follows an alternating pattern where the odd-positioned terms advance by adding 3 to the alphabetical position of each corresponding letter:

First letters: B (+3) → E (+3) → H Second letters: A (+3) → D (+3) → G Third letters: C (+3) → F (+3) → I

Combining these gives the fifth term, HGI.

Explanation

The Army is a military force responsible for land-based defense and national security, operating as a service branch under administrative control. It is an operational defense organization rather than a fundamental constitutional organ of state power.

Explanation

Gujarat is a state located on the western coast of India, whereas the remaining choices are individual cities located within the state.

Explanation

The 8 standard cardinal and intermediate directions in clockwise order are North, North-East, East, South-East, South, South-West, West, and North-West, spaced 45° apart. Moving two places counter-clockwise (90°) turns South-East into North-East, and North-West into South-West. Applying the same two-place counter-clockwise rotation to West moves it through South-West to South.

Explanation

Let the starting point be at the origin (0, 0) on a Cartesian plane where east/west lies along the x-axis and north/south along the y-axis.

Walking 3 km east moves his position to (3, 0). Turning left (north) and moving 3 km moves his position to (3, 3). Turning left again (west) and moving 4 km moves his position to (3 - 4, 3) = (-1, 3).

Since the final position has a negative x-coordinate (west) and a positive y-coordinate (north), he is standing in the North-west direction relative to his starting point.

Explanation

When moving to the right of a position counted from the left, the positions are added directly: Position = 14 + 5 = 19

The 19th letter of the English alphabet from left to right is S.

Explanation

In the given pair, Length is a physical quantity and Metre is its unit of measurement, following the order of Quantity : Unit. Similarly, Mass is a physical quantity and Gram is its unit of measurement, maintaining the exact same relationship and order.

Explanation

Each term in the series is obtained by squaring the preceding term.

First term = 9 Second term = 9² = 81 Third term = 81² = 6561 Fourth term = 6561²

Calculating 6561² using the expansion (a + b)² = a² + 2ab + b² with a = 6560 and b = 1:

6561² = (6560 + 1)² = 6560² + 2 × 6560 × 1 + 1² = 43033600 + 13120 + 1 = 43046721

Explanation

Each letter in the words corresponds directly to a specific digit based on its position in the given codes:

From LAST = 1234: L = 1, A = 2, S = 3, T = 4

From BOOK = 5667: B = 5, O = 6, K = 7

Using these direct letter-to-digit mappings to form the word TOAST: T = 4 O = 6 A = 2 S = 3 T = 4

Combining these digits gives 46234.

Explanation

The given series is an arithmetic progression with a constant common difference of 45 between consecutive terms:

135 - 90 = 45 180 - 135 = 45 225 - 180 = 45 270 - 225 = 45

To find the missing number, add 45 to the preceding term:

270 + 45 = 315

Explanation

Each letter of the word is shifted backward by 2 positions in the alphabetical sequence:

D - 2 = B R - 2 = P A - 2 = Y G - 2 = E O - 2 = M N - 2 = L

Applying the same rule to STARK:

S - 2 = Q T - 2 = R A - 2 = Y R - 2 = P K - 2 = I

Following this pattern, STARK is coded as QRYPI.

Explanation

Number the five positions 1 to 5 from left to right.

According to the given conditions: S is on the left end, so S is at position 1. P is third from the right end, which corresponds to position 3. Since T is not sitting next to P, T cannot be at position 2 or position 4. Thus, T must occupy position 5 on the far right. T is sitting next to R, which means R must be at position 4. P is sitting next to Q, placing Q at position 2.

The complete arrangement from left to right is S - Q - P - R - T. Consequently, R is positioned directly between P and T.

Explanation

Each letter corresponds directly to a specific digit based on the given words:

F = 1, O = 2, R = 3, W = 4, A = 5, D = 6, T = 7, E = 8

Applying these mappings to the word RETARD gives: R → 3 E → 8 T → 7 A → 5 R → 3 D → 6

Combining these digits in order yields 387536.

Explanation

Arranging the height of the five friends based on the given statements:

R is taller than Q but shorter than S: Q < R < S T is taller than S: Q < R < S < T P is the shortest of all: P < Q < R < S < T

Combining all the inequalities gives the complete height order from shortest to tallest as P < Q < R < S < T, which places T at the top position as the tallest.

Explanation

Brahmaputra is a Himalayan river that originates outside India in Tibet (Angsi Glacier). In contrast, Godavari, Krishna, and Cauvery are peninsular rivers that originate within India in the Western Ghats.

Explanation

Each term in the given series is obtained by multiplying the preceding term by 9:

3 × 9 = 27 27 × 9 = 243 243 × 9 = 2187

Alternatively, the series represents consecutive odd powers of 3: 3¹ = 3 3³ = 27 3⁵ = 243 3⁷ = 2187

Explanation

Both arguments address crucial facets of student union elections using valid and practical reasoning. Argument 1 is strong because democratic representation provides a structured platform for students to voice their grievances and safeguard their rights before university administration. Argument 2 is equally strong as electoral rivalries in educational institutions frequently lead to violence, political interference, and disruption of the academic environment. Since both points present logically sound and realistic concerns from opposing perspectives, both arguments are strong.

Explanation

Each letter in the given word is replaced by the letter that is 4 positions ahead of it in the English alphabetical series (positional value + 4).

In POLE: P (16) + 4 = T (20) O (15) + 4 = S (19) L (12) + 4 = P (16) E (5) + 4 = I (9)

In BOAR: B (2) + 4 = F (6) O (15) + 4 = S (19) A (1) + 4 = E (5) R (18) + 4 = V (22)

Applying the same pattern to HAT: H (8) + 4 = L (12) A (1) + 4 = E (5) T (20) + 4 = X (24)

Explanation

A thumb is an essential structural component of a hand that serves as its primary functional tip. Similarly, a nib is the key structural component located at the tip of a pen that enables its core writing function.

Explanation

G % U indicates that G is the mother of U. U # V indicates that U is the brother of V, which means G is also the mother of V. V * T indicates that V is the daughter of T. Because G is already established as V's mother, T is the father of V and the husband of G. T # Z indicates that T is the brother of Z. Z * V indicates that Z is the aunt of V, which confirms Z is female and the sister of T.

Since T is the husband of G and Z is the sister of T, Z is the husband's sister of G.

Explanation

The given statements only establish that all kings are contained within the set of queens and that there is an overlap between kings, queens, and cakes. They do not assert that the set of queens consists exclusively of kings and cakes. Since there can exist queens that are neither kings nor cakes, the universal claim that all queens must be either cakes or kings cannot be concluded from the given premises.

Explanation

In the given letter-clusters, the positional differences between consecutive letters follow a pattern of +5, -2, and +5. In JOMQ, the alphabetical positions are J = 10, O = 15, M = 13, and Q = 17, giving successive differences of +5, -2, and +4. Because the final step is +4 instead of +5, it deviates from the pattern followed by the other clusters.

Explanation

A coalition is a formal alliance formed by different countries working together for a common purpose. Similarly, a union is a collective organization formed by workers to protect and promote their common interests.

Explanation

The statement "A chain is only as strong as its weakest link" means that the overall capacity, reliability, or resilience of an entire system is limited by its most vulnerable component. Consequently, the strength of the weakest link directly determines the overall strength and load-bearing ability of the chain.

Explanation

The given series consists of the squares of consecutive natural numbers n² starting from n = 1:

1² = 1 2² = 4 3² = 9 4² = 16 5² = 25

The next number in the sequence for n = 6 is 6² = 36.

Explanation

To find the required glove, we evaluate the properties of glove T against the given conditions:

Material: T, U, and S are specified as rubber gloves. Colour: Since S, P, and Q are green, the remaining gloves (R, T, and U) are black. Origin: Since Q, S, and U are gifted, the remaining gloves (P, R, and T) are bought and thus not gifted.

Glove T is the only glove that is simultaneously rubber, black, and not gifted.

Explanation

Silver is a specific type of metal. Following the same category-to-type relationship, teak is a specific type of wood.

Explanation

By the rules of immediate inference in syllogism, a particular affirmative statement (I-type statement) of the form "Some A are B" can always be directly converted to "Some B are A".

Applying this conversion rule to the first statement ("Some men are elephants") yields "Some elephants are men" (Conclusion 1). Applying the same conversion rule to the second statement ("Some elephants are tigers") yields "Some tigers are elephants" (Conclusion 2).

Explanation

A logical conclusion must be a direct inference derived strictly from the given premises, rather than a suggested course of action or policy recommendation. The first conclusion proposes a remedial action to promote reading methods, which is a recommendation rather than a logical deduction. The second conclusion suggests conducting a study to determine the status of book reading, but the given statement already provides the status of book reading and its decline as a known fact. Consequently, neither statement logically follows as an inference from the given text.

Explanation

The logic followed is n : n² + n (or n × (n + 1)).

For the first number: 14² + 14 = 196 + 14 = 210

Applying the same rule to the third number: 16² + 16 = 256 + 16 = 272

Explanation

Manoj's rank from the top = Total players - Players below Manoj = 40 - 8 = 32nd.

The number of players between two positions A and B (where B > A) is given by the formula: (B - A - 1).

Number of players between Jatin (15th) and Manoj (32nd) = 32 - 15 - 1 = 16.

Explanation

Interchanging the signs − and ÷ in the equation 56 − 8 + 42 ÷ 6 × 5 = 19 gives:

56 ÷ 8 + 42 − 6 × 5 = 19

Following the BODMAS rule:

Division: 56 ÷ 8 = 7, giving 7 + 42 − 6 × 5 Multiplication: 6 × 5 = 30, giving 7 + 42 − 30 Addition: 7 + 42 = 49, giving 49 − 30 Subtraction: 49 − 30 = 19

Explanation

The statement simply describes the process of renewal where old leaves are replaced by new ones. Conclusion 1 assumes a necessary requirement that new leaves can never exist without old leaves, which cannot be logically derived from a statement about replacement. Conclusion 2 assumes that old leaves are useless, but replacement due to biological shedding or aging does not imply that old leaves served no utility during their lifecycle. Both conclusions go beyond the information provided in the statement.

Explanation

A pen is a writing instrument categorized as stationery, primarily used for writing or drawing on paper using ink. On the other hand, a knife, fork, and spoon are all pieces of cutlery or tableware designed for eating, serving, and preparing food at the dining table.

Explanation

"The only child of my mother" refers to Manpreet himself, as Manpreet is the speaker. Since Manoj's father is the only child of Manpreet's mother, Manoj's father is Manpreet. Thus, Manpreet is Manoj's father.

Explanation

From the statement that some bangles are bracelets and all bracelets are studs, it logically follows that some bangles are studs, which converts to some studs are bangles (conclusion 1 follows).

From the statement that some rings are bangles, its direct conversion gives that some bangles are rings (conclusion 4 follows).

Since no direct relationship is established between bracelets and rings, the positive statement that some bracelets are rings and the negative statement that no bracelet is a ring form a complementary pair, meaning either conclusion 2 or conclusion 3 must follow.

Explanation

The heart is the primary organ of the human cardiovascular (circulatory) system, responsible for pumping blood to supply oxygen and nutrients to tissues throughout the body. Unlike the other three terms, which are all structural or functional components of the nervous system, the heart belongs to an entirely different organ system.

Explanation

The series follows two independent patterns for the letters and numbers:

Letters advance by 2 positions in alphabetical order: B (+2) → D (+2) → F (+2) → H (+2) → J.

Numbers increase by 7 in each step: 3 (+7) → 10 (+7) → 17 (+7) → 24 (+7) → 31.

Combining the letter and number gives J31.

Explanation

When a large number of people voluntarily adopt a new practice or method, it is implicitly assumed that the practice offers significant advantages or benefits over existing methods. Therefore, farmers taking up organic farming implies that they perceive it to be more beneficial to them. Difficulty or ease of practice cannot be assumed, as people often adopt challenging methods if they yield better overall outcomes.

Explanation

Kane Williamson, the New Zealand captain, was named the Player of the Tournament at the 2019 ICC Cricket World Cup. He scored 578 runs in 10 matches at an average of 82.57, including two centuries and two half-centuries, while leading his team to the tournament final.

Explanation

Each letter in the given word is shifted backward by 2 positions in the alphabetical order:

R - 2 = P I - 2 = G N - 2 = L G - 2 = E

Applying the same pattern to ITEM gives:

I - 2 = G T - 2 = R E - 2 = C M - 2 = K

Explanation

When medical advice states that sunbathing is a source of vitamin D, it inherently assumes that people can utilize sunbathing as a viable option to absorb vitamin D into their bodies. Describing something as "a source" indicates that it is one available option among potentially others, rather than the exclusive or only provider of vitamin D.