What is the sum of the squares of the first 20 natural numbers (1 to 20)?
Choose the correct choice from the following answers
A) 2870
B) 2000
C) 5650
D) 6650
E) 7650
n(n+1)(2n+1)/6   20(21)(21)/6   =2870   2870NSWER:2870
<result>A</result>
What is the sum of the squares of the first 20 natural numbers (1 to 20)?