A bag contains some red and green balls if we take a ball from it without looking , the probability of getting a red ball is 1/4 . what is the total number of balls , if there are 8 red balls ?
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Probability of red ball is 1/4. => x = 4*8 = 32. Number of green balls = 32 - 8 = 24. So probability of getting a green ball = 24/32 = 3/4.
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