Exercise 11.1-Additional Problems - Chapter 11 - Probability Distributions - 12th Maths Guide Samacheer Kalvi Solutions - Tamil Medium

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Additional Problems
Question 1.
Four defective oranges are accidentally mixed with sixteen good ones. Two oranges are drawn at random from the mixed lot. If the random variable ' $\mathrm{X}$ ' denotes the number of defective oranges, then find the values of ' $X$ ' and number of points in its inverse image.
Solution:
Number of good oranges $=16$
Number of bad oranges $=4$
Total $=20$
Let ' $\mathrm{X}$ ' be the random variable denotes the number of bad oranges and it can take the values $0,1,2$
$\mathrm{X}(\mathrm{GG})=0$
$\mathrm{X}(\mathrm{GB}$ (or) $\mathrm{BG})=1$
$\mathrm{X}(\mathrm{BB})=2$