If p and r are integers, and p^2 = 24r, then r must be divisible by which of the following?
Choose the correct choice from the following choices.
A) 2
B) 3
C) 5
D) 7
E) 14
Ans: D   Solution: for p to be an int 24 r must be whole square of a number.   28r= 3*2*2*2*r   to make it whole square we need 3   so r can must be divisible by 3y where y is itself a whole square.   so 3 is the ans
<result>B</result>
If p and r are integers, and p^2 = 24r, then r must be divisible by which of the following?