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CAT 1993 — QA Question 27

Picking balls from a bagEasy
Passage / Data

Answer the next 2 questions based on the information given below:

A function f(x) is said to be even if f(–x) = f(x), and odd if f(–x) = –f(x). Thus, for example, the function given by f(x) = x2 is even, while the function given by f(x) = x3 is odd. Using this definition, answer the following questions.

A box contains 6 red balls, 7 green balls and 5 blue balls. Each ball is of a different size. The probability that the red ball selected is the smallest red ball, is

Answer & solution

  • A

    1/18

  • B

    1/3

  • 1/6

  • D

    2/3

Solution

Since there are 6 red balls and all six of them are of different sizes, probability of choosing the smallest among them is 16.

Hence, option (c).

CAT 1993 QA Q27: A box contains 6 red balls, 7 green balls and 5 blue balls. Each ball is of a different size. The probability — Solution | TheCATExam