Total number of possible outcomes = 12 {3 red balls, 5 black balls & 4 white balls}

**(i) E ⟶ event of getting white ball**

No. of favourable outcomes = 4 {4 white balls}

Probability, P(E) = 4/12 = 1/3

**(ii) E ⟶ event of getting red ball**

No. of favourable outcomes = 5 {3 red balls}

P (E) = 3/12 = 1/4

**(iii) E ⟶ event of getting black ball**

No. of favourable outcomes = 5 {5 black balls}

P (E) = 5/12

**(iv) E ⟶ event of getting red**

No. of favourable outcomes = 3 {3 black balls}

P(E) = 3/12 = 1/4

(Bar E) ⟶ event of not getting red.

P(Bar E) = 1 – P(E)

= 1 – 1/4

= 3/4