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The sum of intergers from 1 to 100 that ...

The sum of intergers from `1` to `100` that are divisible by `2` or `5` is -

A

3000

B

3050

C

3600

D

none of these

Text Solution

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The correct Answer is:
B
Sum of integers divisible by `2=50/2[2+100]=2550`
Sum of integers divisible by `5=20/2[5+100]=1050`
Sum of integers divisible by `10=10/2[10+100]=550`
`rArr` Sum of integers divisible by 2,5 is `=(2550+1050)-550=3050`
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