A bag contains 5 white- 7 red and 3 black balls- If a ball is chosen random- then the probability that it is not red-

Question

Toppr Admin · Accepted Answer

Total no- of balls -5-7-3-implies 15- ballsProbability that the chosen-160- ball is red is - No- of red balls-Total no- of balls-implies -dfrac-7-15-Hence-160- the probability that it is not red is-160- -1-dfrac-7-15-dfrac-8-15-

A bag contains $$5$$ white, $$7$$ red and $$3$$ black balls. If a ball is chosen at random, then find the probability that it is not red.

Total no. of balls $$=5+7+3$$
$$\implies 15$$ balls

Probability that the chosen ball is red is $$=$$ No. of red balls$$/$$Total no. of balls
$$\implies \dfrac{7}{15}$$

Hence, the probability that it is not red is $$1-\dfrac{7}{15}=\dfrac{8}{15}$$

A bag contains $$5$$ white, $$7$$ red and $$3$$ black balls. If a ball is chosen at random, then find the probability that it is not red.

Total no. of balls $$=5+7+3$$$$\implies 15$$ ballsProbability that the chosen ball is red is $$=$$ No. of red balls$$/$$Total no. of balls$$\implies \dfrac{7}{15}$$Hence, the probability that it is not red is $$1-\dfrac{7}{15}=\dfrac{8}{15}$$

Total no. of balls $$=5+7+3$$
$$\implies 15$$ balls

Probability that the chosen ball is red is $$=$$ No. of red balls$$/$$Total no. of balls
$$\implies \dfrac{7}{15}$$

Hence, the probability that it is not red is $$1-\dfrac{7}{15}=\dfrac{8}{15}$$