Question

If we add first n odd numbers, we get ______

(a) n

(b) n-1

(c) n^2

(d) n^2-1

This question was posed to me during an interview.

My doubt stems from Patterns in Squares in division Squares and Square Roots of Mathematics – Class 8

Answer 1

The correct option is (c) n^2

Easy explanation: If we add first n odd numbers we get n^2. For example

1+3+5=9=3^2, here we have added first three odd numbers and we get 3^2.

Hence, n^2 would be the correct answer and the other options would be incorrect.