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The roll of a pair of dice has the following probability distribution, where the random variable is the sum of the values produced by each die. Calculate the variance of x. x
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RD Sharma Solutions for Class 7 Maths Chapter 7 - Algebraic Expressions - Exercise 7.2 - free PDFs are available here
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![SOLVED: Permutation Solve for the unknown: 1. P(6,5)- 2. P(3,r)=6, r= 3. P(n,2)-12,n= 4. P(n,5)-720,n= 5. P(S,r)-60,r= 6 P(8,4)- 7.C(7,5)= 8. C(n,4)= 15,n= 9. C(8,)= 28,r= 10. C(9,9)= 11. C(n,3)-35,n= 12. C(10,6)= SOLVED: Permutation Solve for the unknown: 1. P(6,5)- 2. P(3,r)=6, r= 3. P(n,2)-12,n= 4. P(n,5)-720,n= 5. P(S,r)-60,r= 6 P(8,4)- 7.C(7,5)= 8. C(n,4)= 15,n= 9. C(8,)= 28,r= 10. C(9,9)= 11. C(n,3)-35,n= 12. C(10,6)=](https://cdn.numerade.com/ask_images/3bb8e08c517b47678b9e9319badb3b54.jpg)
SOLVED: Permutation Solve for the unknown: 1. P(6,5)- 2. P(3,r)=6, r= 3. P(n,2)-12,n= 4. P(n,5)-720,n= 5. P(S,r)-60,r= 6 P(8,4)- 7.C(7,5)= 8. C(n,4)= 15,n= 9. C(8,)= 28,r= 10. C(9,9)= 11. C(n,3)-35,n= 12. C(10,6)=
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