Question

tell the probablity​

Answer 1

Step-by-step explanation:

Total number of balls, n(s) = 4+5+6 = 15

Red ball, n(r) = 4

Black ball, n(b) = 5

White ball, n(w) = 6

Not black, n(nB) =10

i. Probability of getting a white ball, p(w) = n(w) /n(s) = 6/15 = 2/5

ii. Probability of getting a red ball, p(r) = n(r) /n(s) = 4/15

iii. Probability of not getting black ball, p(nB) = n(nB) /n(s) = 10/15 2/3

iv. Probability if red or white, p(rw) = p(w) +p(r) = 2/5 + 4/15 = 6+4/15 = 10/15 = 2/3