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The second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/
Question

The second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number-pairs except one. Find that odd number-pair.

A.

2 : 9

B.

6 : 21

C.

10 : 33

D.

8 : 29

Correct option is D

In this question following logic is followed-
1st × 3 + 3 = 2nd Number
Option (a) 2 : 9 → 2 × 3 + 3 = 6 + 3 = 9
Option (b) 6 : 21 → 6 × 3 + 3 = 18 + 3 = 21
Option (c) 10 : 33 → 10 × 3 + 3 = 30 + 3 = 33
Option (d) 8 : 29 → 8 × 3 + 3 = 24 + 3 = 27 ≠ 29
Therefore, the correct answer is (d).

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