Question

។
A number from 1 to 11 is chosen at random. What is the probability of choosing a prime
number?
olare interval 20.5 - 40.5​

Answer 1

5/11

Step-by-step explanation:

We are given that, a number from 1 to 11 is chosen at random. We need to find the probability of choosing a prime number.

Prime numbers are the numbers which has two factors: 1 and the number itself.

We know that: 2,3,5,7,11 are the 5 prime numbers between 1 and 11. Hence,

→ n(A) = 5

(Here, n(A) = Number of favourable outcomes)

We also know that, totally 11 numbers are taken at random:

→ n(s) = 11

(Here, n(s) = Total number of outcomes)

Hence, the Probability of getting prime number is:

→ P(A) = n(A)/n(S)

→ P(A) = 5/11

Hence, the probability of getting a prime number is 5/11.