Question

What conjecture can you make about the sum of the first 10 positive even numbers?
A. The sum is 9 · 10.
B. The sum is 10 · 10.
C. The sum is 11 · 12.
D. The sum is 10 · 11.

Answer 1

the sum of n numbers = n(n+1)

Answer 2

so if n = 10 , n(n+1) = ?

Answer 3

thanks

Answer 4

yw