Question

Find sum of first 50 natural numbers.

Answer 1

Answer:

S=1+2+3+4……….+50

It is an easy arithmetic progression

which we know it has a formula that calculates the sum : S= n/2 *[a1+an]

n= number of members (50)

a1= the first member(1)

an= the last member (50)

So S=50/2 *(50+1) = 25 *51

S=1275

Explanation:

Answer 2

Answer:What is the sum of the first 50 natural numbers? This is a arithmetic sequence. n(n+1)/2=50(51)/2=2550/2=1275.

Explanation:

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