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A jar contains 7 black balls, 6 yellow b...

A jar contains 7 black balls, 6 yellow balls, 4 green balls and 3 red balls. All of then are of same size and weight. If a ball is drawn at random, then the probability of th ball being red is

A

`(1)/(5)`

B

`(3)/(30)`

C

`(1)/(10)`

D

`(3)/(10)`

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