If r and p are two different prime numbers, which of the following is the smallest possible value of r + p?  Answers.
A) 1  B) 3  C) 5  D) 8  E) 10
By definition only positive numbers can be primes.   Two smallest primes are 2 and 3 --&gt; 2 + 3 = 5.   Answer: 5
<result>C</result>
If r and p are two different prime numbers, which of the following is the smallest possible value of r + p?