Select the option that is related to the fifth term in the same way as the second term is related to the first term and fourth term is related to the third term.
7 : 36 :: 16 : 225 :: 21 : ?
Answer & explanation
Correct answer: option 1
The logic used here is that the second term is the square of the 1 subtracted from the first number,
36 = (7 - 1)² and 225 = (16 - 1)²
Thus, the last term will be (21 - 1)² = 400