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In Choose odd Number Pair / Group, certain pairs / groups of numbers are given out of which all except one are similar in some manner while one is different. The numbers in these similar pairs may have the same property or may be related to each other according to the same rule. The candidate is required to choose the odd pair / group.

choose odd numeral pair/group

( 5:50 ), ( 8:128 ), ( 11:242 ), ( 15:370 )

Option:
A. 5:50
B. 8:128
C. 11:242
D. 15:370
Answer: A . 15:370

Justification:

In all other pairs, second number is mulitple of  first number.
 
5:50 - 5*10
8:128 - 8 * 41
11:242 - 11 * 22
15:370 - 15 * 24.6

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