Question

a bag contains 7 red 5 white and 3 black balls a ball is drawn at random from the bag find the probability that the drawn ball is​

Answer 1

Step-by-step explanation:

Total no. of balls in the bag is 15 (7 red, 5 black and 3 white)

Solution(i):

No. of red balls in bag is 7

Therefore,

7

C

1

( Selecting 1 out of 7 items) times out of

15

C

1

( Selecting 1 out of 15 items) a red ball is picked.

Let E be the event of drawing a red ball from bag

We know that, Probability P(E) =

⁷c1(No.of favorable outcomes)/¹⁵cq(Total no.of possible outcomes) = 7/15