Question

a box contains 2 red marbles balls, 3 White marble balls 5 green marble balls, If 2 balls are drawn at random, the expected number of white balls is​

Answer 1

Answer:

1 will be probability

because it is possible that 1 white ball can come

Answer 2

Step-by-step explanation:

⭐SOLUTION:

GIVEN:

A box contains 2 red marbles balls 3 white marble balls 5 green marble balls

Two balls are drawn at random

TO DETERMINE

The probability of getting both white

EVALUATION:

Here it is given that a box contains 2 red marbles balls 3 white marble balls 5 green marble balls

So the total number marble balls

= 2 + 3 + 5

= 10

Now 2 balls are drawn at random

So the total number of possible outcomes

10 C2

=45

Let A be the event that both balls are white

Then the total number of possible outcomes for the event A is

3 C2

=3

Hence the required probability

= P(A)

= 3/45

= 1/15 (Ans)