The second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number-pairs EXCEPT one. Find that odd number-pair.
Answer & explanation
Correct answer: option 1
The logic followed here is :
( second number - 3)2 = ist number
169 : 14 ⇒ 14 - 3 = (11)2 = 121 ≠ 169
225 : 18 ⇒ 18 - 3 = (15)2 = 225
196 : 17 ⇒ 17 - 3 = (14)2 = 196
256 : 19 ⇒ 19 - 3 = (16)2 = 256