What will be the sum of all the odd numbers from 1 to 20 without actually adding.

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100

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Solution

The correct option is C 100

Since there are 10 odd numbers between 1 to 20.

And to find the sum of odd numbers from 1 to 20 just multiply 10 by 10

10 × 10 = 100

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Similar questions

Find the sum 1 + 3 + 5 + … + 51 (the sum of all odd numbers from 1 to 51) without actually adding them.

1 + 3 + 5 + . . . . . + 51

1

51

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