Question

A bag contains $5$ red balls $4$ green balls and $7$ black balls If one ball is drawn a random what is the probability that it is black?

• A. $\frac{5}{24}$
• B. $\frac{7}{16}$
• C. $\frac{1}{3}$
• D. none of these

Answer 1

The correct option is B $\frac{7}{16}$

$\Rightarrow$ A bag contains $5$ red balls, $4$ green balls and $7$ black balls.

$\Rightarrow$ Total balls = $5+4+7=16$

$\Rightarrow$ Number of black balls = $7$.

$\therefore$ Probability of one black ball is drawn at random = $\frac{No.ofblackballs}{Totalno.ofballs}=\frac{7}{16}$