CAT 2020 Probability — Previous Year Question
Year
CAT 2020
Section
Quantitative
Topic
Probability
Difficulty
Hard
Question
Slot-1
A box contains 6 cricket balls, 5 tennis balls and 4 rubber balls. Of these, some balls are defective. The proportion of defective cricket balls is more than the proportion of defective tennis balls but less than the proportion of defective rubber balls. Moreover, the overall proportion of defective balls is twice the proportion of defective tennis balls. What BEST can be said about the number of defective rubber balls in the box?
It is either 2 or 3
It is exactly 2
It is exactly 3
It is either 3 or 4
It is either 0 or 1
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