Total no. of possible outcomes = 15 {4 red, 5 black, 6 white balls}

**(i) E ⟶ event of drawing white ball.**

No. of favourable outcomes = 6 {6 white}

Probability, P(E) = (No. of favorable outcomes)/(Total no.of possible outcomes)

P(E) = 6/15 = 2/5

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

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

P(E) = 4/15

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

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

P(E) = 5/15 = 1/3

Bar E⟶ event of not drawing black ball

P(Bar E) = 1 − 1/3 = 2/3

**(iv) E ⟶ event of drawing red or white ball**

No. of favourable outcomes = 10 {4 red & 6 white}

P(E) = 10/15 = 2/3