XAT 2014Quantitative AbilityProbability, CombinatoricsMEDIUM+1 / −0.25

Aditya has a total of 18 red and blue marbles in two bags (each bag has marbles of both colors). A
marble is randomly drawn from the first bag followed by another randomly drawn from the
second bag, the probability of both being red is 5/16. What is the probability of both marbles being blue?

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XAT 2014Quantitative AbilityProbability, CombinatoricsMEDIUM+1 / −0.25

Select an option to reveal the answer and explanation

Practice the full paper

Attempt XAT 2014 Question Paper with real exam interface and instant grading.

Aditya has a total of 18 red and blue marbles in two bags (each bag has marbles of both colors). Amarble is randomly drawn from the first bag followed by another randomly drawn from thesecond bag, the probability of both being red is 5/16. What is the probability of both marbles being blue?