Question

From the given set of numbers [-9. -6, -3,3,9,15,18,21,24,27.30} Find the probability of

   1. numbers divisible by 2

   2. number divisible by 3

   3. number less than -3  

   4. number divisible by 5

   5. Positive prime numbers

​

Answer 1

n(s) =10

1 ans :n(s) =10

n(E) = -6, 18,24,

n(E) = 3

p(E) =n(e) /n(s)

=3/10

2 ans n(s) =10

n(e) = -9,-6,-3,3,9,15,18,21,24

p(e) =n(e) /n(s)

9/10

3 ans n(s) =10

n(e) = -9,-6,

p(e) =n(e) /n(s)

=2/10

=1/5

4 ans n(s) =10

n(e) =15

n(e) =1

p(e) =n(e) /n(s)

=1/10

5 ans n(s) =10

n(e) =3

p(e) =n(e) /n(s)

=1/10