Question

HELP MEEE WHATS THIS QUESTION

Answer 1

$\huge\boxed{161}$

Let's start by finding the first 15 perfect square numbers ($1^2, 2^2, 3^2, ...$):

$1,4,9,16,25,36,49,\bold{64},81,100,121,144,169,196,\bold{225}$

Next, we just need to find the difference between the 15th perfect square number and the 8th perfect square number, which I've made bold in the list above.

$225-64\\\boxed{161}$