Question

ULUSO UUUU.
Wat is le PIUany
8./ A bag contains 20 balls out of which 5 are red, 6 are black and rest are white. One ball is
drawn at random. What is the probability that it is a white ball ?
9. A die is thrown once, what is the probability of getting an even number on a die ?
is​

Answer 1

Answer:

We have 8 red and 5 white balls. total =13

A total of 3 balls are to be selected.

So total outcomes =

13

C

3

Favourable outcomes = selection of 1 red and 2 white balls =

8

C

1

×

5

C

2

So probability, p=

13

C

3

8

C

1

×

5

C

2

=

143

40