Question

please answer this question ​

Answer 1

therefore Sample space is 'S' and n(S)=3+4+7=14

event A : drawing a red ball

therefore n(A)=3

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

=3/14

event A: drawing a black ball

therefore n(B)=7

therefore p(B)=n(B)/n(S)

=7/14

=1/2

Answer 2

Total outcomes = 3+4+7 = 14.

the probability of drawing red or a black balls:- total favourable outcomes =3+7=10.

p(E) = No|| of favourable outcomes

total possible outcomes

= 10/14 = 5/7.

I hope it is helpful to you.

God knows best