Correct Answer - Option 1 : 11.2
Concept used:
A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor other than 1 and itself.
Average = Sum of elements/No. of elements
Calculation:
Composite numbers between 1 to 20 are
4, 6, 8, 9, 10, 12, 14, 15, 16, 18
Average = (4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18)/10
⇒ 112/10
⇒ 11.2
∴ Average is 11.2
