Question

On a 20 sided dice what is the probability that a 11 was rolled?

Answer 1

Given:

A 20 sided dice is rolled.

To find:

The probability of getting 11.

Solution:

A 20 sided dice is rolled.

On a 20 sided dice, the possible outputs are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.

Total number of outcomes = 20

Favorable outcomes or number of 11 = 1

Now,

$\text{Probability of getting 11}=\dfrac{\text{Favorable outcomes}}{\text{Total number of outcomes}}$

$\text{Probability of getting 11}=\dfrac{1}{20}$

$\text{Probability of getting 11}=0.05$

Therefore, the probability of getting 11 is 0.05.