Question

What is the mode of first 50 natural nos.

Answer 1

Answer:

Step-by-step explanation:

   

What is the sum of the first 50 natural numbers?

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This is a arithmetic sequence.

Formula for the sum of n terms. S(n) = (n/2)(first + last)

Your Problem:

S(50) = (50)/2(1+50)

S(50) = 25*51 = 1275

(n+1)*n/2=51*25=1275. or

n(n+1)/2=50(51)/2=2550/2=1275.