Question Detail
Question
The sum of the first n odd numbers is?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The first n odd numbers are 1, 3, 5, ..., (2n-1). Their sum is n². This can be proven by mathematical induction or by the formula for arithmetic series: sum = n/2 × (first + last) = n/2 × (1 + 2n-1) = n/2 × 2n = n².
Hint
This is a well-known formula in mathematics.