Four pairs of numbers have been given, out of which three are alike in some manner, while one is different. Choose out the odd one.
Answer & explanation
Correct answer: option 2
THE LOGIC;
1) 18 - 81,
9 x2 = 18, 9 x9 = 81
2) 26 - 168,
13 x2 = 26, 13 x13 = 169 not 168
3) 16 - 64,
8 x2 = 16, 8 x8 = 64
4) 34 - 289,
17 x = 34, 17 x17 = 89
Thus, 26 - 168 is the odd one.