defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Logical Reasoning Classification Number Based
Given below are four number pairs out of which three are alike in some way or the other and one is different. Choose the number pair that is different from the other.
1
(7, 56)
2
(9, 90)
3
(4, 20)
4
(11, 131)