What is the sum of first 20 natural numbers? Options: A . &nbsp220 B . &nbsp205 C . &nbsp190 D . &nbsp210

What is the sum of fi

Question

What is the sum of first 20 natural numbers?

Options:

A . 220

B . 205

C . 190

D . 210

Answer: Option D

Answer : Option D

Explanation :

$MF#%1 + 2 + 3 + cdots + n = sum{n} = dfrac{n(n+1)}{2}%$MF#%

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