Question

4.) What is the probability of getting a composite number in a month with 30 days?


5.) What is the probability of getting a prime number in a month with 30 days?

Answer 1

Step-by-step explanation:

Therefore, the 19 composites between 1 and 30 are: 4,6,8, 10,12,14,16,18, 20,22,24,26,28, 30. 9, 15, 21,27

Answer 2

Explanation:

Here we will use the concept of probability.

Probability = favourable no. of outcome / possible no. of outcome

Given:

We have total number of days = 30.

Find:

We have to find the probability of getting composite number and to find the probability of getting prime number.

Solution:

No. of composite number between 1 and 30 = 4, 6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,30

No. of prime number between 1 and 30 = 2,3,5,7,11,13,17,19,23,29

Probability of getting composite number = favourable no. of outcome / possible no. of outcome

= 19/30

Probability of getting prime number = favourable no. of outcome / possible no. of outcome

= 10/30 = 1/3

Hence, the final answer is 19/30 and 1/3 respectively.

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