Question

Find the sum of all even natural numbers from 1 to 350

Answer 1

We can solve it in an easy way..

The formula of finding the sum of all even no.s is n*(n+1)

Where n=((first even no+last even no)÷2)-1

Here first even no is 2 and last is 350

n=((2+350)÷2)-1=176–1=175

Our ans is 175*(175+1)

=175*176=30800

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