How many positive integers between 100 and 500 are there such that they are multiples of 19?	Choose one:
A) 10  B) 15  C) 21  D) 18  E) 19

Rationale: multiples of 19 = 114 , 133,152 , - - - - - , 494 number of multiples of 19 = > 494 - 114 / 19 + 1 = 21 answer is c
Answer: C