Question

please say answer very fast​

Answer 1

Answer:

Step-by-step explanation:

Probability of getting a red ball = 4/16

Probability of getting a green ball = 9/16

Let the ball that has to be removed be = x

Therefor-:

(9-x/16-x) - (4/16-x) = 1/12

x=4

Hence 4 green balls has to removed.

Answer 2

Let the number of green balls removed be x.

Number of green balls = 9-x

Red balls = 4

Blue balls = 3

Total number of balls = 9-x+4+3 = 16-x

Probability of getting green ball = (9-x) / (16-x)

Probability of getting red ball = 4 / (16-x)

(9-x) / (16-x) - 4 / (16-x) = 1/12

(5-x)/(16-x) = 1/12

60 - 12x = 16 - x

11x = 44

x = 44/11

x= 4

Therefore, 4 green balls should be removed

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