What is the total number of prime numbers less than 50?	Options:
A) 17  B) 18  C) 19  D) 15  E) 21
Solution   Prime numbers less than 50 are	=15.   2,3,5,7,11,13,17,19,23,29,31,37,41,43,47   Their number is 15.   Answer 15
<result>D</result>
What is the total number of prime numbers less than 50?