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An urn contains $8$ white balls, $7$ white balls, black balls, $5$ black balls, red balls and $4$ red balls and green balls. A ball is drawn at random from the bag, then the probability that it is not green is,

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56

523

724

423

answer is A.

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Detailed Solution

Given is an urn which has

white,

black,

red and

green balls.
The total number of balls

= 8 + 7 + 5 + 4

= 24

There are a total of 24 balls in the bag.
In the bag, there are a total of 24 - 4 = 20 balls that are not green in color.
Therefore, the probability the ball drawn from the bag is not green,

= number of not green balls total number of balls

= 2024 = 56

The probability the ball drawn from the bag is not green

= 56

.
Hence, option 1 is correct.

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