RRB Group D (Level-1 posts) 2022 · Question 387 of 598

Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number. 3 ∶ 12 ∶∶ 25 ∶ 78 ∶∶ 21 ∶ ?

Answer: A. 66

The pattern adds the squares of individual digits. 3 + 3² = 12, 25 + 5² = 78, and 21 + 6² = 66.

Source: RRB Group D 2022 Prev. Yr. Paper (18 Aug 2022) (Shift 2) - Prepp · reliable-secondary

Practice the full RRB Group D (Level-1 posts) 2022 paper

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RRB Group D (Level-1 posts) 2022 · Question 387 of 598

The pattern adds the squares of individual digits. 3 + 3² = 12, 25 + 5² = 78, and 21 + 6² = 66.

Source: RRB Group D 2022 Prev. Yr. Paper (18 Aug 2022) (Shift 2) - Prepp · reliable-secondary

Practice the full RRB Group D (Level-1 posts) 2022 paper

Timed test with all 598 questions, just like the real exam.