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

Explanation

The series follows two distinct patterns for the letter component and the number component:

For the letters, the positional value of each letter decreases by 3 at each step: First letter: N (14) - 3 = K (11), K (11) - 3 = H (8), H (8) - 3 = E (5), E (5) - 3 = B (2) Second letter: V (22) - 3 = S (19), S (19) - 3 = P (16), P (16) - 3 = M (13), M (13) - 3 = J (10) Third letter: A (27) - 3 = X (24), X (24) - 3 = U (21), U (21) - 3 = R (18), R (18) - 3 = O (15)

For the numbers, 7 is added to each preceding term: 7 + 7 = 14, 14 + 7 = 21, 21 + 7 = 28, 28 + 7 = 35

Combining the letters and the number gives BJO 35.

Explanation

The pattern between the letter-clusters in each pair is obtained by subtracting 4 from the alphabetical position of each letter (-4 shift).

For the left pair, using # = TSQ: T (20) - 4 = P (16) S (19) - 4 = O (15) Q (17) - 4 = M (13)

For the right pair, using % = HGE: L (12) - 4 = H (8) K (11) - 4 = G (7) I (9) - 4 = E (5)

Both sides maintain the identical -4 letter transformation rule.

Explanation

Expressing the given numbers in their prime factorizations: 120 = 2³ × 3¹ × 5¹ 360 = 2³ × 3² × 5¹ 900 = 2² × 3² × 5² 90 = 2¹ × 3² × 5¹

Let N = 2ᵃ × 3ᵇ × 5ᶜ.

From LCM(120, N) = 360: max(3, a) = 3 ⇒ a ≤ 3 max(1, b) = 2 ⇒ b = 2 max(1, c) = 1 ⇒ c ≤ 1

From HCF(900, N) = 90: min(2, a) = 1 ⇒ a = 1 min(2, b) = 2 ⇒ b ≥ 2 min(2, c) = 1 ⇒ c = 1

Combining these conditions gives: a = 1 b = 2 c = 1

Thus, N = 2¹ × 3² × 5¹ = 90 is uniquely determined, giving exactly 1 possible value for N.

Explanation

The pattern followed in the given pairs is: Result = (First Number × 6) + 1

Applying the rule to the first two given pairs: 23 × 6 + 1 = 138 + 1 = 139 28 × 6 + 1 = 168 + 1 = 169

Applying the same logic to 25: 25 × 6 + 1 = 150 + 1 = 151

Explanation

When a principal P becomes five times itself under simple interest, the total amount is 5P, making the simple interest earned SI = 5P - P = 4P.

Using the simple interest formula SI = (P × R × T) / 100: 4P = (P × R × 10) / 100 4 = R / 10 R = 40%

Explanation

Decoding the given expression T + P × M - V + S step-by-step:

V + S means V is the sister of S. M - V means M is the husband of V, which makes V the mother of M's children. P × M means P is the son of M (and V). T + P means T is the sister of P, making T the daughter of V.

Since T is the daughter of V, and V is the sister of S, T is the sister's daughter of S.

Explanation

Average = (Sum of numbers) ÷ (Total count of numbers)

Substituting the given values: Average = 528 ÷ 12 = 44

Explanation

Since no one has an exam before N, N has an exam on Monday. Only three people have exams between N (Monday) and O, placing O on Friday. L has an exam on Wednesday. Since only one person has an exam between O (Friday) and M, and Wednesday is already occupied by L, M has an exam on Sunday.

,The remaining available days are Tuesday, Thursday, and Saturday for C, B, and A. Because B's exam is after C's but before A's, the chronological sequence requires C to be on Tuesday, B on Thursday, and A on Saturday.

Explanation

In the standard alphabetical sequence, each valid pair consists of two two-letter clusters of consecutive alphabets where the second cluster starts by skipping one letter after the end of the first cluster (a gap of +2). In XY- YZ, the second cluster starts with Y, the exact same letter that ends the first cluster, thereby skipping zero letters. This makes XY- YZ the odd pair out.

Explanation

Dropping all numbers (5, 8, 1, 3, 4, 6, 9, 7, 2, 5, 4) from the series leaves only the symbols in order from left to right: #, %, *, %, %, @, @, , #,, %.

Counting the symbols from the left: 1st symbol: # 2nd symbol: % 3rd symbol: * 4th symbol: %

Explanation

Replacing the mathematical signs according to the given conditions: '-' is replaced by '×' '+' is replaced by '+' and '-' respectively '×' is replaced by '÷'

Rewriting the expression: 79 × 8 + 55 - 423 ÷ 3

Applying the BODMAS rule: Division: 423 ÷ 3 = 141 Multiplication: 79 × 8 = 632 Addition and Subtraction: 632 + 55 - 141 = 687 - 141 = 546

Explanation

Positioning the seven people around the table in counter-clockwise order (moving to the right of a person facing the center):

Since Q sits to the immediate right of C, Q is one step counter-clockwise from C.

C sits third to the left of D, placing D three steps counter-clockwise from C.

O sits third to the left of Q, placing O five steps counter-clockwise from C.

R is not an immediate neighbor of C, so R cannot sit adjacent to C. To satisfy the condition that exactly one person sits between P and B when counted to the right of P, P is placed four steps counter-clockwise from C, followed by O, and then B at six steps counter-clockwise from C. This leaves the spot two steps counter-clockwise from C for R.

The complete arrangement in counter-clockwise order is C, Q, R, D, P, O, B.

Counting from the right of R (moving counter-clockwise towards B), the people sitting between R and B are D, P, and O, making a total of three people.

Explanation

Decoding the expression P + Q - R * S + T step-by-step:

P + Q means P is the husband of Q, which implies P is male. Q - R means Q is the mother of R. Since P is married to Q, P is the father of R. R * S means R is the sister of S, which means R and S are siblings, so P is also the father of S. S + T means S is the father of T.

Because S is the father of T and P is the father of S, P is the father of T's father (father's father).

Explanation

The pattern between the letter-clusters in both pairs is formed by shifting each letter backward by 5 positions in the English alphabetical series.

Applying this rule to the left pair: Q (17) - 5 = L (12) P (16) - 5 = K (11) U (21) - 5 = P (16) This gives QPU for #.

Applying the same rule to the right pair: T (20) - 5 = O (15) S (19) - 5 = N (14) X (24) - 5 = S (19) This gives ONS for %.

Explanation

To find the required numbers, we look for the pattern: Number → Target Number → Symbol.

Scanning the given series from left to right:

In the sequence 4 9 %, the number 9 is immediately preceded by the number 4 and immediately followed by the symbol %. In the sequence 9 6 ?, the number 6 is immediately preceded by the number 9 and immediately followed by the symbol ?.

There are two such numbers (9 and 6) that satisfy both conditions.

Explanation

The given statements establish a subset chain: Crabs ⊆ Bats ⊆ Wigs ⊆ Dogs.

For Conclusion (I), since the set of crabs is entirely contained within the set of bats, which in turn is inside wigs and dogs, all crabs are strictly inside the set of dogs. Thus, Conclusion (I) logically follows.

For Conclusion (II), since all bats are contained within the set of dogs, the intersection between dogs and bats is non-empty. Therefore, some dogs are bats, making Conclusion (II) logically follow as well.

Explanation

The ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding altitudes:

(Area₁ / Area₂) = (h₁ / h²)²

Taking the square root on both sides:

h₁ / h₂ = √(Area₁ / Area₂) = √(841 / 676) = 29 / 26

Thus, the ratio of their corresponding altitudes is 29:26.

Explanation

The sequence of operations connecting the numbers in each set is: First term - 10 = Second term Second term × 3 = Third term Third term + 12 = Fourth term

Applying this exact pattern starting with 14 gives: 14 - 10 = 4 4 × 3 = 12 12 + 12 = 24

This matches the sequence 14- 4- 12- 24.

Explanation

Numbering the six positions from 1 (top) to 6 (bottom):

F is placed third from the top, so F is at position 3.

Since two boxes are kept between F and D, D must be at position 6.

A is kept above F but somewhere below E. The available positions above position 3 are 1 and 2, so E is at position 1 and A is at position 2.

The remaining open positions for boxes B and C are 4 and 5. Since C is not kept at the second place from the bottom (position 5), C is at position 4 and B is at position 5.

The complete arrangement from top to bottom is E (1), A (2), F (3), C (4), B (5), D (6). Box A is at position 2 and box B is at position 5, leaving 2 boxes (F and C) between them.

Explanation

The Taj Mahal, commissioned by the Mughal emperor Shah Jahan in 1631 in memory of his wife Mumtaz Mahal, is situated on the right bank of the Yamuna River in Agra, located in the state of Uttar Pradesh. It was designated a UNESCO World Heritage Site in 1983 as an outstanding masterpiece of Indo-Islamic architecture.

Explanation

From Statement I, the relative weights are D > C > (A, B), which leaves the position of Box-E unknown.

From Statement II, the relative weights are D > E > C, which leaves the positions of Box-A and Box-B unknown.

Combining both statements yields the relative ordering D > E > C > (A, B). This uniquely identifies Box-E as the second heaviest box among all five boxes.

Explanation

The series follows a pattern where consecutive prime numbers (2, 3, 5, 7, 11, ...) are subtracted from each term:

30 - 2 = 28 28 - 3 = 25 25 - 5 = 20 20 - 7 = 13 13 - 11 = 2

Explanation

The pattern adds consecutive decreasing integers (+6, +5, +4, +3) to the alphabetical positions of each letter:

L (12) + 6 = R (18) F (6) + 5 = K (11) G (7) + 4 = K (11) K (11) + 3 = N (14)

G (7) + 6 = M (13) M (13) + 5 = R (18) O (15) + 4 = S (19) P (16) + 3 = S (19)

Applying the same logic to COLU:

C (3) + 6 = I (9) O (15) + 5 = T (20) L (12) + 4 = P (16) U (21) + 3 = X (24)