Question

A bag contains 10 white 2 orange and 3 black balls. What is the probability of black balls

Answer 1

Answer:

Probability is 1 ÷ 5

Step-by-step explanation:

Here, there are 10 white ball , 2 orange and 3 black ball

S = { 10 + 2 +3 } balls

n ( S ) = { 15 }

Event A : Black ball

n ( A )= { 3 }

P ( A ) = n ( A ) ÷ n ( S )

= 3 ÷ 15

= 1 ÷ 5

Answer 2

Answer:

$\frac{1}{5}$ is the probability of black balls.

Step-by-step explanation:

Explanation:

Given , a bag contains 10 white , 2 orange and 3 black balls .

Total number of balls in a bag = 10 + 2 + 3 = 15 balls.

Number of black balls = 3

As we know that,

Probability = $\frac{ Number \ of \ favourable\ outcomes}{Total\ Number\ of \ outcomes}.$

Step 1:

Let E be the event of black balls .

Number of favourable outcomes = 3

and total number of outcome = 15

Probability of black balls ,P(E) = $\frac{3}{15}$ = $\frac{1}{5}$.

Final answer:

Hence, the probability of black balls is $\frac{1}{5}$.

#SPJ3