Question

Amit and mukesh are two friends they play a game of drawing a ball from a bag which contains 24 balls of which x red 2x white ball and 3x black balls amit draw a ball which is not white and Mukesh draw a ball which is black find their probabilities the ball

Answer 1

Answer:

x+2x+3x=24

6x=24

x=24/6

x=4

so,x=4

2x=8

3x=12

Explanation:

by unitary method

Answer 2

2/3 , 1/2

Explanation:

Given:

Total number of balls = 24 balls

Number of Red balls = x balls

Number of White balls = 2x balls

Number of Black balls = 3x balls

Computation:

Total balls = x + 2x + 3x

24 = 6x

24 / 6 = x

4 = x

Red balls  = 4

White balls = 4(2) = 8

Black balls = 4(3) = 12

A. Probability of not a white ball

Probability of not a white ball = 1 - Probability of a white ball

= 1 - (Total number of White balls / total number of balls )

= 1 - (8 / 24)

= 1 - 1/3

= 2/3

B. Probability of  a black ball

Probability of  a black ball = Total number of black balls / total number of balls )

= 12 / 24

= 1/2

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