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Three of the following four triads are alike in a certain way as they are formed by performing the same mathematical operations among themselves and t
Question

Three of the following four triads are alike in a certain way as they are formed by performing the same mathematical operations among themselves and thus form a group. Which triad does NOT belong to that group?

A.

12 : 47 : 60

B.

4 : 16 : 20

C.

2 : 7 : 10

D.

5 : 19 : 25

Correct option is B

The logic is:
Third Number =First Number + Second Number+1
Verification
12 : 47 : 60
12 + 47 + 1 = 60

4 : 16 : 20
4 + 16 + 1 = 21 ≠ 20

2 : 7 : 10
2 + 7 + 1 = 10

5 : 19 : 25
5 + 19 + 1 = 25

Final Answer
The triad that does NOT follow the logic is:
(b) 4 : 16 : 20




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