Question

the number is choosen from 1 to 20 find the probability of getting prime numbers, composite number, multiples of 3​

Answer 1

Answer:

The primes from 1 to 20 are 2, 3, 5, 7, 11, 13, 17, 19.  There are 8 of them.  So the probability of getting a prime number is 8/20 = 2/5.

The composite numbers from 1 to 20 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20.  There are 11 of them.  So the probability of getting a composite number is 11/20.

The multiples of 3 from 1 to 20 are 3, 6, 9, 12, 15, 18.  There are 6 of them.  So the probability of getting a multiple of 3 is 6/20 = 3/10.

Hope this helps!

Answer 2

Step-by-step explanation:

hope this may help you!!