What is the number of integers from 1 to 1000 (inclusive) that are divisible by neither 15 nor by 20?  Choose the correct choice:
A) 887  B) 678  C) 765  D) 345  E) 256
In 1000 consecutive numbers, number of multiples of 15 = 1000/15 = 66 (Ignore decimals)   In 1000 consecutive numbers, number of multiples of 20 = 1000/20= 
<gadget id="calculator">1000/20</gadget>
<output>50</output>
50   Number of multiples of 15*20 i.e. 300= 1000/300 = 3   Number of integers from 1 to 1000 that are divisible by neither 15 nor by 20 = 1000 - (66 + 50 - 3) {Using the concept of sets here) = 887   887nswer is 887
<result>A</result>
What is the number of integers from 1 to 1000 (inclusive) that are divisible by neither 15 nor by 20?