RRB NTPC CBT 1 2026 General Intelligence & Reasoning Questions with Solutions

Explanation

The series alternates between letter clusters and numbers.

The numbers increase by 8 in each step: 8, 16, 24, 32, 40.

The letter clusters follow an alternating pattern where alternate clusters advance by +2 for each letter position: First letters: Q (+2) = S, E (+2) = G, S (+2) = U Second letters: B (+2) = D, P (+2) = R, D (+2) = F Third letters: L (+2) = N, Z (+2) = B, N (+2) = P

Combining the derived cluster and the next number gives UFP 40.

Explanation

Let Point A be at the origin (0, 0) on a Cartesian coordinate plane where East-West is the x-axis and North-South is the y-axis.

Driving 31 km East reaches (31, 0). Turning left (North) and driving 19 km reaches (31, 19). Turning left (West) and driving 34 km reaches (31 - 34, 19) = (-3, 19). Turning left (South) and driving 32 km reaches (-3, 19 - 32) = (-3, -13). Turning left (East) and driving 3 km reaches Point P at (-3 + 3, -13) = (0, -13).

Point P is 13 km South of Point A. To reach Point A from Point P, Vishu must drive 13 km to the North.

Explanation

The pattern follows an increasing addition to the alphabetical positional values of each consecutive letter by +2, +4, +6, and +8 respectively:

R (+2) = T, A (+4) = E, F (+6) = L, I (+8) = Q N (+2) = P, E (+4) = I, G (+6) = M, L (+8) = T

Applying the same pattern to JRTB: J (10) + 2 = L (12) R (18) + 4 = V (22) T (20) + 6 = Z (26) B (2) + 8 = J (10)

This gives LVZJ.

Explanation

From the given statements, every car is both a bus and a rickshaw. Since cars belong to the category of buses as well as rickshaws, the set of cars forms an intersection between buses and rickshaws. This guarantees that at least some buses are rickshaws, so conclusion (II) logically follows.

On the other hand, knowing that all cars are trams and all cars are buses only establishes that cars are contained inside both sets; it does not mean that every tram is a bus. Therefore, conclusion (I) does not follow.

Explanation

To find the required letters, we look for the pattern Symbol - Letter - Symbol in the given sequence. Scanning from left to right, three letters satisfy this condition: F is preceded by # and followed by in the segment # F , C is preceded by # and followed by # in the segment # C #, and L is preceded by @ and followed by | in the segment @ L | .

Explanation

Decoding the given expression G + R × W + D - M step-by-step:

D - M: D is the mother of M. W + D: W is the father of D. R × W: R is the wife of W, which means R is the mother of D. G + R: G is the daughter of R.

Since R is the mother of both G and D, G and D are sisters. Since D is the mother of M, G is the sister of M's mother, making G the mother's sister of M.

Explanation

Floor 5 is occupied by Q, and B is on Floor 6 as B lives above Q. Since only R lives below C, C must be on Floor 2 and R on Floor 1. The remaining floors for A and S are 4 and 3. Since A lives on an even-numbered floor, A is on Floor 4, which places S on Floor 3. The people living below S (Floor 3) are C (Floor 2) and R (Floor 1), making a total of two people.

Explanation

Each letter advances by +5 positions in the alphabetical order, while the number increases by +4 in each step.

First letter: Z (26) + 5 → E (5) + 5 → J (10) + 5 → O (15) + 5 → T (20) Second letter: O (15) + 5 → T (20) + 5 → Y (25) + 5 → D (4) + 5 → I (9) Third letter: B (2) + 5 → G (7) + 5 → L (12) + 5 → Q (17) + 5 → V (22) Number sequence: 6 + 4 = 10, 10 + 4 = 14, 14 + 4 = 18, 18 + 4 = 22

Combining these yields TIV 22.

Explanation

The pattern follows a constant subtraction of 5 from the alphabetical position of each letter (-5 shift):

For the left pair (RSN : MNI): R (18) - 5 = M (13) S (19) - 5 = N (14) N (14) - 5 = I (9)

For the right pair (UVQ : PQL): U (21) - 5 = P (16) V (22) - 5 = Q (17) Q (17) - 5 = L (12)

Explanation

Breaking down the given expression step by step:

N + O means N is the sister of O, making N and O siblings.

M × N means M is the mother of N, which makes M the mother of O.

L - M means L is the husband of M, making L the father of O.

K + L means K is the sister of L.

Since K is the sister of L, and L is the father of O, K is the father's sister of O.

Explanation

Since only two people live above P, P lives on floor 4.

The product of the floor numbers of Q and R is 3, so their floors must be 1 and 3. Since Q lives on a prime-numbered floor, Q is on floor 3 and R is on floor 1.

The remaining unassigned floors are 2, 5, and 6. T lives immediately below S, so S and T must occupy floors 6 and 5 respectively.

This leaves floor 2 for U. Therefore, only 1 person (R on floor 1) lives below U.

Explanation

After dropping all the letters from the given series, the remaining sequence consists only of symbols: % | # @ | Counting these symbols starting from the right side: The first from the right is | The second from the right is * The third from the right is @ The fourth from the right is # The fifth from the right is | The sixth from the right is * The seventh from the right is %

Explanation

The pattern follows the rule: Second number = (First number × 5) + 1.

For the first pair, 8 × 5 + 1 = 41. For the second pair, 81 × 5 + 1 = 406.

Applying the same logic to 13 gives 13 × 5 + 1 = 66.

Explanation

In a circular arrangement of seven positions numbered 1 to 7 clockwise facing the center:

Placing O at position 1, D sits fourth to its right at position 5. Counting two positions to the left of D (positions 4 and 3) places B at position 2. B is third to the right of C, so C is at position 6. Q sits between B and R, placing Q at position 3 and R at position 4. The only remaining seat, position 7, is occupied by P.

The complete clockwise arrangement is O(1), B(2), Q(3), R(4), D(5), C(6), and P(7).

Counting to the right (clockwise) of P, the people sitting between P and Q are O and B, which totals two people.

Explanation

The pattern followed by the given sets is: First Number - Second Number = Third Number

Checking the given sets: 252 - 80 = 172 170 - 55 = 115

Applying the same pattern to the set in option b: 195 - 95 = 100

Explanation

Since all phones are contained entirely within the set of mobiles, and no mobile is a pager, no phone can share any intersection with pagers. Thus, conclusion (I) logically follows. Regarding conclusion (II), the statements define the relationships of pagers and walkie-talkies with mobiles, but provide no information about the relationship between walkie-talkies and pagers themselves, so conclusion (II) cannot be definitively concluded.

Explanation

Since no one lives above T, T occupies floor 6. Two people live between T and K, placing K on floor 3. J lives below K and above S, which places J on floor 2 and S on floor 1. Two people live between R and J, which places R on floor 5. L occupies the remaining floor, floor 4. Therefore, three people (on floors 1, 2, and 3) live below L.

Explanation

The pattern follows a positional shift of +2, +3, +2, +3 for consecutive letters in the English alphabet:

D (+2) = F, U (+3) = X, M (+2) = O, B (+3) = E L (+2) = N, G (+3) = J, U (+2) = W, N (+3) = Q

Applying the same logic to RPAW: R (+2) = T P (+3) = S A (+2) = C W (+3) = Z

Explanation

The second digit from the left in the number 8634157 is 6. Since 6 is an even digit, subtracting 2 from it gives 6 - 2 = 4.

Explanation

In EAG, the alphabetical positions of the letters are E = 5, A = 1, and G = 7, which follows a pattern of subtracting 4 and adding 6 (5 - 4 = 1, 1 + 6 = 7). All other clusters follow the pattern of subtracting 4 from the first letter position and adding 7 to the second letter position.

Explanation

The pattern in the series is formed by adding the cubes of consecutive natural numbers to each preceding term:

23 + 1³ = 24 24 + 2³ = 32 32 + 3³ = 59 59 + 4³ = 123 123 + 5³ = 248

The missing term is obtained by adding 5³ (125) to 123, which equals 248.

Explanation

The sequence follows a pattern where consecutive prime numbers are added to each term:

20 + 2 = 22 22 + 3 = 25 25 + 5 = 30 30 + 7 = 37

The next prime number after 7 is 11. Adding 11 to 37 gives:

37 + 11 = 48

Explanation

Comparing the two given coded statements, 'food' is the only common word between 'food is delicious' and 'harry loves food', and 'dc' is the only common code between 'ga dc vr' and 'dc hu bw'. Therefore, 'food' is coded as 'dc'.

Explanation

For conclusion (I), towns that are not districts can overlap with states, so a universal negative relation between towns and states cannot be established with certainty.

For conclusion (II), while both districts and cities are disjoint from states, no direct or indirect relation is specified between districts and cities, meaning they may or may not overlap.

Since neither conclusion is definitely true in all possible Venn diagram representations, neither follows.

Explanation

Comparing the letter sets and digit sets of both words: ALIT contains the letters A, L, I, T mapped to the set of digits {2, 1, 5, 9}. HILT contains the letters H, I, L, T mapped to the set of digits {6, 9, 1, 2}.

The common letters between both words are I, L, and T, which correspond to the common digits 1, 2, and 9 in both codes. The letter H appears only in HILT, and 6 is the only digit in {6, 9, 1, 2} that is not present in {2, 1, 5, 9}.

Explanation

Applying the given operations to each digit of the number 8263451:

For even digits, subtract 2: 8 becomes 6, 2 becomes 0, 6 becomes 4, and 4 becomes 2.

For odd digits, add 1: 3 becomes 4, 5 becomes 6, and 1 becomes 2.

Writing the transformed digits in their original sequence yields 6, 0, 4, 4, 2, 6, 2.

In this new sequence, digit 0 appears 1 time, digit 2 appears 2 times, digit 4 appears 2 times, and digit 6 appears 2 times. The digits 2, 4, and 6 each appear more than once, making a total of 3 digits.

Explanation

From Statement I, Darshan is taller than Chirag, and Chirag is taller than both Anuj and Bhavesh (Darshan > Chirag > Anuj/Bhavesh). However, Eklavya's height relative to Darshan is unknown, so Statement I alone is not sufficient.

From Statement II, Darshan is taller than Eklavya, who is taller than Chirag (Darshan > Eklavya > Chirag). However, the heights of Anuj and Bhavesh are unknown, so Statement II alone is not sufficient.

Combining both statements establishes the complete order: Darshan > Eklavya > Chirag > Anuj/Bhavesh. This confirms that Darshan is taller than all four other people, so both statements together are sufficient to determine the tallest person.

Explanation

The pattern follows two independent rules for the numbers and the letters:

Number series: The numbers increase progressively by +3, +4, +5, and +6. 9 + 3 = 12 12 + 4 = 16 16 + 5 = 21 21 + 6 = 27

Letter series: Each letter in a cluster moves forward by 15 positions in alphabetical order (+15 mod 26) to form the corresponding letter in the next cluster. First letters: S (19) + 15 = H (8), H + 15 = W (23), W + 15 = L (12), L + 15 = A (1) Second letters: W (23) + 15 = L (12), L + 15 = A (1), A + 15 = P (16), P + 15 = E (5) Third letters: D (4) + 15 = S (19), S + 15 = H (8), H + 15 = W (23), W + 15 = L (12)

Combining the resulting letter set and number gives AEL 27.

Explanation

Each letter in the sequence is shifted forward in the English alphabetical order by an increasing number of positions (+3, +4, +5, +6):

First letter: E (5) + 3 = H (8) Second letter: I (9) + 4 = M (13) Third letter: J (10) + 5 = O (15) Fourth letter: S (19) + 6 = Y (25)

Applying this positional shift produces the letter group HMOY.

Explanation

Numbering the 7 positions from 7 at the top to 1 at the bottom:

Since only D is above E, D is at position 7 and E is at position 6. No box below G means G is at position 1. Two boxes are kept between B and G, placing B at position 4.

The remaining vacant positions are 5, 3, and 2. Since A is below F but above C, they must be arranged as F, A, and C from top to bottom, placing F at position 5, A at position 3, and C at position 2.

The complete order from top to bottom is D, E, F, B, A, C, G. With C placed at position 2, there are 5 boxes (D, E, F, B, and A) kept above C.

Explanation

To find the required symbols, we look for the pattern: Symbol - Symbol - Letter.

Scanning the given series from left to right: KYCK AACPNPYMRB#+J The sequence # + J contains the symbol '+' which is immediately preceded by the symbol '#' and immediately followed by the letter 'J'.

No other symbol in the series is simultaneously preceded by a symbol and followed by a letter. Thus, there is only 1 such symbol.

Explanation

Since only one person lives above D, D lives on floor 5. Only two people live between A and D, which places A on floor 2. F lives immediately above B, so they must occupy the contiguous vacant floors, putting F on floor 4 and B on floor 3. Since E does not live above D, E lives on floor 1, leaving the top floor 6 for C. Because C lives on floor 6, all 5 other people live below C.

Explanation

The pattern followed in the given sets is: Second number = (First number × 4) - 2

For the given sets: 16 × 4 - 2 = 64 - 2 = 62 21 × 4 - 2 = 84 - 2 = 82

Applying the same operation: 24 × 4 - 2 = 96 - 2 = 94

Explanation

The sequence of mathematical operations applied across the numbers in each set is: First number × 5 = Second number Second number + 5 = Third number Third number × 2 = Fourth number

Applying this pattern to 17 gives: 17 × 5 = 85 85 + 5 = 90 90 × 2 = 180

Explanation

Decoding the given expression step by step: G + R means G is the daughter of R. R - W means R is the mother of W. W × D means W is the wife of D. D ÷ M means D is the father of M.

From these relations: D is the father of M and W is the wife of D, which makes W the mother of M. R is the mother of W, and G is the daughter of R, which means G and W are sisters. Since G is the sister of M's mother W, G is M's mother's sister.

Explanation

Taking Point A as the origin (0, 0):

Initial position at Point A = (0, 0) After driving 84 km North = (0, 84) After turning left (West) and driving 80 km = (-80, 84) After turning left (South) and driving 83 km = (-80, 84 - 83) = (-80, 1) After turning left (East) and driving 90 km = (-80 + 90, 1) = (10, 1) After turning right (South) and driving 1 km = (10, 1 - 1) = (10, 0), which is Point P.

To reach Point A (0, 0) from Point P (10, 0), he must drive 10 km towards the West.

Explanation

The pattern follows a constant shift of -2 in the alphabetical position of each letter from the left cluster to the right cluster in both pairs.

In the first pair, OKP : MIN: O (15) - 2 = M (13) K (11) - 2 = I (9) P (16) - 2 = N (14)

Applying the exact same rule to the second pair, RNS : PLQ: R (18) - 2 = P (16) N (14) - 2 = L (12) S (19) - 2 = Q (17)

Explanation

In the standard pattern followed by the group, the second letter is obtained by adding 2 to the alphabetical position of the first letter, and the third letter is obtained by subtracting 4 from the position of the second letter (+2, -4). In SUR, S (19) + 2 = U (21), but U (21) - 3 = R (18), which follows a (+2, -3) pattern instead.

Explanation

The pattern in the series is based on adding consecutive square numbers (n²) to each preceding term:

55 + 1² = 55 + 1 = 56 56 + 2² = 56 + 4 = 60 60 + 3² = 60 + 9 = 69 69 + 4² = 69 + 16 = 85 85 + 5² = 85 + 25 = 110

Explanation

The series follows two distinct patterns for the letter clusters and the numbers:

For the letter clusters, each corresponding letter in the successive terms moves forward by 7 positions in alphabetical order (+7): First letter: I (+7) → P (+7) → W (+7) → D (+7) → K Second letter: J (+7) → Q (+7) → X (+7) → E (+7) → L Third letter: M (+7) → T (+7) → A (+7) → H (+7) → O

For the numerical part, each number decreases by 8: 77 - 8 = 69 69 - 8 = 61 61 - 8 = 53 53 - 8 = 45

Combining both patterns gives KLO 45.

Explanation

Total surface area of a cube = 6a², where a is the length of its side.

Substituting a = 91 cm into the formula: Total surface area = 6 × (91)² = 6 × 8281 = 49686 cm²

Explanation

To meet the condition, a symbol must follow the pattern Letter-Symbol-Symbol.

In the given sequence EA@DR I%BBV@AJESBENL, every symbol (@, , %, @,, ) is immediately followed by a letter rather than another symbol: @ is followed by letter D is followed by letter I % is followed by letter B @ is followed by letter A is followed by letter E

• is followed by letter S

Since no symbol is followed by another symbol, there are 0 such symbols in the series.

Explanation

The Ten Degree Channel is a oceanic strait in the Bay of Bengal that lies on the 10° N latitude. It is approximately 150 kilometers wide and separates the Little Andaman island to the north from the Car Nicobar island to the south, serving as the maritime boundary between the Andaman group and the Nicobar group of islands.

Explanation

Numbering the seven positions from left to right as 1 to 7:

Since three people sit to the left of S, S is at position 4.

Q and O have four people between them, meaning they are separated by five positions. Since neither sits at position 1 (the left end), Q and O must occupy positions 2 and 7.

B and O have three people between them. If O were at position 2, B would be at position 6, leaving non-adjacent open positions 1, 3, and 5, which cannot accommodate C sitting immediately to the left of R. Therefore, O must be at position 7 and Q at position 2.

With O at position 7, B sits at position 3. The adjacent open positions 5 and 6 are occupied by C and R respectively, leaving position 1 for P.

The final arrangement from left to right is P, Q, B, S, C, R, O. Between P (position 1) and R (position 6), there are 4 people (Q, B, S, C).

Explanation

To satisfy the given condition, a symbol must follow the pattern: Letter → Symbol → Symbol.

Evaluating the series from left to right: In the sequence P / <, the symbol / is immediately preceded by the letter P and immediately followed by the symbol <.

All other symbols in the series are either preceded by a symbol or followed by a letter, leaving only 1 symbol that meets both requirements.

Explanation

For any two numbers, the product of the numbers equals the product of their HCF and LCM:

First Number × Second Number = HCF × LCM

Substituting the given values: 45 × Second Number = 5 × 180 45 × Second Number = 900 Second Number = 900 / 45 = 20

Explanation

Since no box is kept above U, U is at position 1 (top).

There are 3 boxes between U and P, which places P at position 5.

T is immediately above P, so T is at position 4.

One box is kept between R and T, placing R at position 2.

Four boxes are kept between R and V, placing V at position 7.

Since Q is kept above S, Q is at position 3 and S is at position 6.

The complete arrangement from top (1) to bottom (7) is U, R, Q, T, P, S, V.

Therefore, between S (position 6) and U (position 1), there are 4 boxes (R, Q, T, and P).

Explanation

Agricultural runoff is the primary source of nutrient pollution causing eutrophication in freshwater bodies due to the widespread use of chemical fertilizers containing high concentrations of nitrogen and phosphorus, along with livestock manure. During heavy rainfall or irrigation, excess nutrients that are not absorbed by crops wash off vast areas of agricultural land directly into surrounding rivers, lakes, and streams. In freshwater ecosystems where phosphorus is typically the limiting nutrient, this massive influx fuels rapid algal blooms, leading to oxygen depletion and severe ecological degradation.

Explanation

Decoding the given expression G # A - R + K: G # A means G is the husband of A, which implies A is female. A - R means A is the daughter of R. R + K means R is the father of K.

Since A is the daughter of R, and G is the husband of A, G is R's daughter's husband.

Explanation

Numbering the 7 positions from 1 at the top to 7 at the bottom: B is at position 5 because only two boxes are below it. G is at position 2 since only one box is above it. A is at position 4 as only one box sits between G and A. C and F occupy consecutive positions 6 and 7 because C is immediately above F. Since E is kept below D, D takes position 1 and E takes position 3.

The complete arrangement from top to bottom is D, G, E, A, B, C, F. The boxes below E are A, B, C, and F, making a total of 4 boxes.