A special fair cubic die is rolled which has one blue side, two red sides and three yellow sides. The result is the colour of the top side after the die is rolled. If the die is rolled 8 times, then the probability of blue colour coming at least twice is

Question

A special fair cubic die is rolled which has one blue side, two red sides and three yellow sides. The result is the colour of the top side after the die is rolled. If the die is rolled 8 times, then the probability of blue colour coming at least twice is, 13 × 5 7 6 8, 6 8 - 13 × 5 7 6 8, 8 × 5 7 6 8, 1 - 8 × 5 7 6 8

MARKS App · Accepted Answer

Let B is the event in which the top side of the die shows blue colour P B = 1 6 = p (Let) Probability of getting a blue colour at least twice = 1 - C 0 8 1 - p 8 - C 1 8 1 - p 7 p 1 = 1 - 5 6 8 - 8 × 1 6 × 5 6 7 = 6 8 - 13 × 5 7 6 8

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