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Mathematics

Probability of an Event "A" Not to Happen

Out of 100 ba...

Question

Out of 100 balls in a bag 30 are green, 35 are blue and 35 are red. Find the probability that a ball drawn from the bag is (i) green (ii) blue (iii) red.

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Solution

(i) There are 30 green balls out of a hundred. So P (Green) = $\frac{30}{100}$ = 0.3

(ii) There are 35 blue balls out of a hundred. So P (Blue) = $\frac{35}{100}$ = 0.35

(iii) There are 35 red balls out of a hundred. So P (Red) = $\frac{35}{100}$ = 0.35

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Out of 100 balls in a bag 30 are green, 35 are blue and 35 are red. Find the probability that a ball drawn from the bag is (i) green (ii) blue (iii) red.

(i) There are 30 green balls out of a hundred. So P (Green) = 30100 = 0.3 (ii) There are 35 blue balls out of a hundred. So P (Blue) = 35100 = 0.35 (iii) There are 35 red balls out of a hundred. So P (Red) = 35100 = 0.35

(i) There are 30 green balls out of a hundred. So P (Green) = $\frac{30}{100}$ = 0.3

(ii) There are 35 blue balls out of a hundred. So P (Blue) = $\frac{35}{100}$ = 0.35

(iii) There are 35 red balls out of a hundred. So P (Red) = $\frac{35}{100}$ = 0.35