Four number pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different. |
25 : 650 18 : 306 23 : 552 13 : 182 |
18 : 306 |
THE LOGIC; 1) 25 : 650, 25 x 25 + 25 = 650 2) 18 : 306, 18 x 18 - 18 = 306 3) 23 : 552, 23 x 23 + 23 = 552 4) 13 : 182, 13 x 13 + 13 = 182 Thus, 18 : 306 is the odd one. |