<p>A "prd" # is defined as one in which the product of the positive divisors of the number, not including the number itself, is greater than the number. Which of the following is a prd number?
8 15 18 21 27</p>
<p>18</p>
<p>A) 2 * 4 not greater than 8
B) 3 * 5 not greater than 15
C) 2 * 9 * 3 * 6 greater than 18 Answer
D) 3 * 7 not greater than 21
E) 3 * 9 not greater than 27</p>
<p>ooo... thx.. I just thought 2 times 9 is still 18 and forgot about 3 and 6...</p>
<p>i like how i vaguely remember all these questions, makes me feel way cool lol</p>