Question

A die is rolled. E is the event that the uppermost face shows a prime number. what is E set

Answer 1

Die contains 6 numbers.

prime numbers on die are 2 ,3 and 5.

so probability = 3/6

1/2

( Note : 1 is neither prime nor composite.)

Answer 2

E {2,3,5}

n (E)=3
n (s)=6
p (E)=n (E)/n (s)
=3/6
=1/2