Question

Suppose you select a number from 21 to 30 at random. What is the probability of selecting a number that is even or prime?

Answer 1

no of primes in 21 to 30=x
no of even in 21 to 30=y
total=10
P(Even or Prime)=(x/10)*(y/10)

Answer 2

So the total would be 10 even or prime?

Answer 3

prime=23,29=2 no
even=5 no(22,24,..30)
so calculate ans

Answer 4

7

Answer 5

So would it be wrote as 7/10 ?

Answer 6

(2/10)*(5/10)

Answer 7

So 10/100 ?

Answer 8

yaa

Answer 9

Ok thank you!