Question

7. A bag contains 4 red and 5 black balls, one ball is drawn at random. Find the probability that it is
(i) black ball, (ii) a red ball.
​

Answer 1

Answer:

Total no of balls in bag = No of red balls

+

No of black balls

=) 4 + 6 = 10 balls

Since Probability of getting a black ball

= No of black balls / Total No of balls

Hence P = 6 / 10

= 3/5.

Answer 2

Answer:

There are in total 9 ball present in Bag..

1)There are 5 black balls present in bag

so.Formula for Probability is

$\frac{no \: of \: oberevatin}{total \: no \: of \:observation}$

5÷9=

ANS. IS 5/9

same formula for red ball

4÷9=

ANS. IS 4/9