Start learning →

What is the mean of the first five natural numbers?

A2
B3
C3.5
D2.5
Answer & Solution
Correct answer: B. 3
1 + 2 + 3 + 4 + 5 = 15, and 15 divided by 5 is 3.
Practise this question with Quill — RRB NTPC →

Keep practising Elementary Statistics

Browse all Elementary Statistics questions for RRB NTPC, or explore more Mathematics topics.

Start a Elementary Statistics lesson →