Question Paper from: IBPS RRB PO Mains 2017

In bag A there are 5 red balls, X green balls, and 7 yellow balls. The probability of drawing one green ball from bag A is 2/5. In bag B there are (X-3) red balls, (X-4) green balls and 6 yellow balls. 2 balls are drawn from bag B. Find the probability that both the balls are red colour?

1:
2/23
2:
3/21
3:
4/21
4:
2/21
5:
None of these
Solution:
Chapter Name: Probability

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IBPS RRB PO Mains 2017

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