Target Exam

CUET

Subject

-- Applied Mathematics - Section B2

Chapter

Probability Distributions

Question:

What is the mean of the numbers obtained on throwing a die having written 1 on three faces, 2 on two faces and 5 on 1 face?

Options:

2

4

1

8

Correct Answer:

2

Explanation:

The correct answer is Option (1) → 2

Values on the die: three faces show $1$, two faces show $2$, one face shows $5$.

Mean $=\frac{1+1+1+2+2+5}{6}$

$=\frac{12}{6}$

$=2$