a box contains 3 blue 2 white and 4 red balls if a ball is drawn out at random from the box ,what is the probabolity that it will be (1)white (2)blue (3)red (4)neither blue ball nor red (5)neither blue nor white (6)neither white nor red (7)not blue (8)not red (9)not white
Answers
Step-by-step explanation:
this is the correct answer for your question
1) Consider one white ball be A and the other white ball be B.
When we draw a ball randomly from the box, the chance that the ball be white is only 2 ways.
one is if we get ball A and the other way is if we get ball B.
Probability of getting a white ball ⇒
No. of favorable outcomes/Total no. of outcomes
⇒ 2/9 [total no. of balls is the total no. of outcomes].
2) Similarly,
probability for a blue ball = 3/9 = 1/3 [ since we have 3 blue balls, no. of favorable outcomes is 3]
3) probability for getting a red ball = 4/9
4) neither blue nor red means, the drawn out ball should not be blue and also red.
The only possible way for this is to draw a white ball.
Probability for getting a white ball = 2/9
5) neither blue nor white implies getting a red ball as outcome.
probability for getting a red ball = 4/9
6) neither white nor red implies getting a blue ball as outcome
probability for getting a blue ball = 3/9 = 1/3
7) not blue means, we can draw a red ball and we can draw a white.
Number of red and white balls = 6
Probability for not getting a blue ball = 6/9 = 2/3
8) similarly probability for not getting red = 5/9
9) probability for not getting white = 7/9