Question

Find the sum of all natural number between 1 and 201 which is divisible by 5

Answer 1

Here first term = 5 , last term =195 , no of terms= 38

So by using formula of AP,

S = N/2(a+l)

=38/2(5+195)

=19*200

=3800

hope this answer helpful u

Answer 2

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