Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digit. E.g. 13 - Operations on 13 such as adding/deleting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

(7, 127, 6)

(8, 129, 5)

Question

Question

This question was previously asked in

RRB Group D 19 Sept 2022 Shift 3 Official Paper

Answer 1

The logic followed here is:

Logic: (1st number)² + (3rd number)² + 1st number × 3rd number = 2nd number.

Now,

(7, 127, 6)

→ (7)² + (6)2 + 7 × 6

→ 49 + 36 + 42 = 127.

(8, 129, 5)

→ (8)2 + (5)2 + 8 × 5

→ 64 + 25 + 40 = 129.

Similarly, for (10, 156, 4)

→ (10)2 + (4)2 + 10 × 4

→ 100 + 16 + 40 = 156.

Hence, the correct answer is "Option 1".