How many multiples of 5 are there between 50 and 500 ? Choose the correct option.
A) 128 B) 91 C) 89 D) 61 E) 60
It should be mentioned whether 50 and 500 are inclusive.   If 50 and 500 are inclusive, then the answer is   (500-50)/5+1= 
<gadget id="calculator">  (500-50)/5+1</gadget>
<output>91</output>
91.   If 50 and 500 are NOT inclusive, then the answer is   (495-55)/5+1= 
<gadget id="calculator">  (495-55)/5+1</gadget>
<output>89</output>
89.   Since OA is 89, then we have NOT inclusive case.
<result>C</result>
How many multiples of 5 are there between 50 and 500 ?