Question

The sum of the first 7 even natural numbers is:

Options

• 42

• 49

• 56

• 63

Answer 1

56

Explanation:

The sum of first n even natural numbers = n(n+1).

For n = 7: 7(8) = 56.

(2 + 4 + 6 + 8 + 10 + 12 + 14 = 56)