Question

What is the average of the first ten Natural numbers?

• A.
  5
• B.
  6
• C.
  5.5
• D.
  6.5

Answer 1

The correct option is C

5.5
The first ten natural numbers are : 1,2,3,4,5,6,7,8,9,10

Their Sum = 1+2+3+4+5+6+7+8+9+10 = 55
Number of observations = 10

$\therefore$ , $Average=\frac{Sumofallobservations}{Totalnumberofobservations}$

$=\frac{55}{10}$

$=5.5$

Hence, 5.5 is the required answer