Today’s SAT question of the day is a math question about number properties (evens and odds, in this case):

How do we make an odd into an even?odd + odd = even –> 3 + 3 = 6

odd – odd = even –> 7 – 3 = 4

odd + even = odd –> 7 + 4 = 11

odd – even = odd –> 11 – 4 = 7

odd * odd = odd  –> 3 * 3 =9

odd / odd = odd –> 9/3 = 3

We need to look for an answer choice that has us adding or subtracting a pair of odd or even numbers in order to end up with an even number as our result.

E does exactly that: p^2 is going to be odd, and p is odd, so odd – odd = even.