In the following question, the second number is related to the first number in some way, choose the alternative which is similarly related to the third number
13 : 196 : : 15 : ?
Answer & explanation
Correct answer: option 4
THE LOGIC FOLLOWED HERE IS :
( IST NUMBER +1 )2 = iiND NUMBER
AS
13 : 196
( 13 + 1 ) 2 = 142 = 196
SIMILARLY
15 : ?
( 15 + 1 ) 2 = 162 = 256