Select the option that is related to the third number in the same way as the second number is related to the first number.
17 : 306 : : 21 : ?
Answer & explanation
Correct answer: option 2
Pattern followed is :
17 : 306
X : X + X2
We have ,
17 : 306
17 : 17 + 172
17 : 17 + 289
17 : 306
Similarly ,
21 : ?
21 : 21 + 212
21 : 21 + 441
21 : 462
462 , is correct answer .