Question : Directions: 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.
Option 1: 16 : 2
Option 2: 100 : 5
Option 3: 36 : 3
Option 4: 186 : 7
Correct Answer: 186 : 7
Solution :
Let's check the options —
First option:
16: 2; (2 × 2)
2
= 16
Second option:
100: 5; (2 × 5)
2
= 100
Third option:
36: 3; (2 × 3)
2
= 36
Fourth option:
186: 7; (2 × 7)
2
= 196 ≠ 186
So the fourth option does not follow the pattern. Hence, the fourth option is correct.
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