Number of ways it can happen: 4 (there are 4 blues)

Total number of outcomes: 5 (there are 5 marbles in total)

So the probability = 4_5 = 0.8

i) Red in color

ii) Either blue or white in color

iii) Not at all green in color

Solution: Here n (S) = 12

All the outcomes are equally likely to occur. So we can calculate the theoretical probability.

i) Favorable outcomes for a red ball = 1.

Hence, P (red) = 112112

ii) Favorable outcome for blue ball = 2

Favorable outcomes for white ball = 3.

Hence P (blue or white) = P (blue) + P (white) = 212212 + 312312 = 512512

iii) Favorable outcomes for green ball = 6

So, P (green) = 612612 = 1212

Hence, P (not green) = 1 - P (green) = 1 - 1212 = 1212