Question

a number is chosen randomly from 1 to 20 find the probability that the number chosen is a multiple of 3 or 7​

Answer 1

Answer:

when a number chosen randomly from 1 to 20.

Step-by-step explanation:

So, sample space (S)= {1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20}

Let the event A be a numbers are multiple of 3 or 7.

So,A= {3,6,9,12,15,18}

So, n(A) =6

P(A)=n(A)/n(S)

=6/20

=3/10

So, P(A)=3/10