Question

Question 32

A glass jar contains 6 red, 5 green, 4 blue and 5 yellow marbles of same size. Hari takes out a marble of red colour. What is the probability that the chosen marble is of red colour?

(a) $\frac{7}{10}$
(b) $\frac{3}{10}$
(c) $\frac{4}{5}$
(d) $\frac{2}{5}$

Answer 1

As, jar contains, 6 red, 5 green, 4 blue and 5 yellow marbles of same size. Then, probability that the chosen marble is of red colour is.
$=\frac{\text{Number of red marbles}}{\text{Total number of marbles}}=\frac{6}{6+5+4+5}=\frac{6}{20}=\frac{3}{10}$