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Tamil Nadu Board of Secondary EducationHSC Science Class 12

An urn contains 5 mangoes and 4 apples. Three fruits are taken at random. If the number of apples taken is a random variable, then find the values of the random variable and number of points in

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Question

An urn contains 5 mangoes and 4 apples. Three fruits are taken at random. If the number of apples taken is a random variable, then find the values of the random variable and number of points in its inverse images

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Solution

Number of mangoes = 5

Number of Apples = 4

Total number of fruits = 9

Let ‘X’ be the random variable that denotes the number of apples taken, then it takes the values 0, 1, 2, 3

X(MMM) = 0

X(AMM or MAM or MMA) = 1

X(AAM or AMA or MAA) = 2

X(AAA) = 3

Value of the random variable 0 1 2 3 Total
Number of elements in inverse image 10 40 30 4 84
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Chapter 11: Probability Distributions - Exercise 11.1 [Page 184]

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Samacheer Kalvi Mathematics - Volume 1 and 2 [English] Class 12 TN Board
Chapter 11 Probability Distributions
Exercise 11.1 | Q 3 | Page 184

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