Find the sum of first 20 natural numbers	Select the correct option
A) 470 B) 210 C) 465 D) 463 E) 485
Explanation:   Sum of n natural numbers   =n(n+1)/2   =20(20+1)/2=20(21)/2=210   Answer: Option 210
<result>B</result>
Find the sum of first 20 natural numbers