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 3
THE LOGIC;
1) 25 : 650,
=> 25 : 25x25+25 = 650
2) 13 : 182,
=> 13 : 13x13+13 = 182
3) 18 : 306,
=> 18 : 18x18-18 = 306
4) 23 : 552,
=> 23 : 23x23+23 = 552
Thus, 18 : 306 is the odd one.