Probability Of Rolling A Prime Number On A 10 Sided Dice

Rohan rolls a 10 sided dice with sides numbered from 1 to 10. What is the probability that he rolls a prime number?

A prime number is a number greater than 1 that has no positive divisors besides 1 and itself.

The prime numbers between 1 and 10 are 2, 3, 5, and 7.

Therefore, out of the 10 possible outcomes when rolling a 10-sided dice, there are 4 prime numbers.

So, the probability of rolling a prime number is 4/10, or 2/5, which can also be expressed as 0.4 or 40%.