Sum of integers from1 to100 which are not divisible by 3or5 is1)24892)

1.	Sum of integers from1 to100 which are not divisible by 3or5 is1)24892)47353)23174)2632
Answer» Sum of the integers 1 to 100 =100(2+99×1)÷2=5050Sum of Integers which are divisible by 3 is=33(6+32×3)÷2=33×51=1683\xa0Sum of Integers which are divisible by 5 is=20(10+19×5)÷2=10×105=1050Sum of Integers which are divisible by 15 is=6(30+5×15)÷2=3×105=315Therefore, the number is,5050-1683-1050+315=4000-1368=2632So the answer is (4) 2632.

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