Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different from the rest.
Answer & explanation
Correct answer: option 4
THE LOGIC;
(1st Number x 1st Number = 2nd number)
1) 11 : 121,
11 x 11 = 121
2) 13 : 169,
13 x 13 = 169
3) 17 : 289,
17 x 17 = 289
4) 15 : 250,
15 x 15 = 225
Thus, 15 : 250 is the odd one.