The average of first 120 odd natural numbers, is:

Question

Question

This question was previously asked in

RPF Constable 2024 Official Paper (Held On 03 Mar, 2025 Shift 2)

Answer 1

Given:

The first 120 odd natural numbers.

Formula Used:

Average of n odd natural numbers = (Sum of n odd numbers) / n

Sum of first n odd natural numbers = n²

Calculation:

Here, n = 120

Sum of first 120 odd natural numbers = 120²

⇒ Sum = 120 × 120 = 14400

Average = Sum / n

⇒ Average = 14400 / 120

⇒ Average = 120

The average of the first 120 odd natural numbers is 120.