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24 is related to 74 following a certain logic. Following the same logic, 36 is related to 110. To which of the given options is 51 related, following the same logic?
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding to/subtracting from/multiplying with 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is
155

Number Logic Puzzle Explained

This problem requires identifying a mathematical relationship between pairs of numbers and applying it to find a missing related number.

Analyzing the Relationship: 24 to 74

We examine the first pair, 24 and 74. Let the first number be N and the second number be M. We look for an operation such that N relates to M.

Consider multiplying N by 3 and adding 2:

For N = 24: \(3 \times 24 + 2 = 72 + 2 = 74\). This matches the given number.

Verifying the Logic: 36 to 110

Let's test this logic (\(3N + 2\)) on the second pair, 36 and 110.

For N = 36: \(3 \times 36 + 2 = 108 + 2 = 110\). This also matches.

The logic \(N \rightarrow 3N + 2\) is consistent.

Applying the Logic to 51

Now, we apply the confirmed logic (\(3N + 2\)) to find the number related to 51.

Let N = 51.

Calculation: \(3 \times 51 + 2 = 153 + 2 = 155\).

Conclusion

Following the established logic, 51 is related to 155.

This corresponds to Option A.

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