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Find the sum of integers from 1 to 10...

Find the sum of integers from 1 to 100 that are divisible by 2 or 5.

A

`2550`

B

`1050`

C

`3050`

D

`4150`

Text Solution

Verified by Experts

The correct Answer is:
C
Sum of integers divided by `2`
`= 2 + 4 + 6 + 8 +"….."+100 = 50 xx 51 = 2550`
Sum of integers divided by `5` ltbRgt `= 5 + 10 + 15 +"….."+ 100 = 51 xx 20 = 1050`
Sum of intergers divided by `10`
`= 10 + 20 +"….."+ 100 = 550`
`:.` Required sum `= 2550 + 1050 - 550 = 3050`
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