Question : Directions: The second number in the given number pairs is obtained by performing certain mathematical operations(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair.
Option 1: 4 : 36
Option 2: 2 : 10
Option 3: 5 : 55
Option 4: 3 : 23
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Correct Answer: 3 : 23
Solution :
Let's check the options —
First option:
4 : 36
→
4 + 4
2
× 2 = 4 + 32 = 36
Second option:
2 :10
→
2 + 2
2
× 2 = 2 + 8 = 10
Third option:
5 : 55
→
5 + 5
2
× 2 = 5 + 50 = 55
Fourth option;
3 : 23
→
3 + 3
2
× 2 = 3 + 18 = 21 ≠ 23
So, only the fourth option doesn't follow the same pattern as followed by other options. Hence, the fourth option is correct.
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