Question

The sum of first 125 even natural numbers?

Answer 1

Answer:

15750

Step-by-step explanation:

By using concept of A.P.

Required sum= n/2(a+l)=125/2(2+250)

=125/2×252

=15750

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Answer 2

Answer:By using sum formula of an A.P. with first term=2 and common difference=2

S=n/2(2a+(n-1)d)

125/2(4+124×2)=15750

I hope it helps you.☺

Step-by-step explanation: