Question

A bag has 4 white and 3 black balls. Two balls are drawn at random. What is the probability of getting a white and a black (not necessarily in that order) with replacement?(Hint: Write your answers at least up to 2 decimal points)​

Answer 1

Step-by-step explanation:

Answer

Total number of drawing 2 balls out of 10balls

=210×(10−1)=45

E= event of getting both balls of same colour 

∴n(E)=24×(4−1)+23(3−1)

=6+3=9

P(E)=n(E)÷n(S)=459=51

51