Class 12 Probability · Mcq Single Correct1 Marksexpectation
Class 12 Maths · Probability · Mcq Single Correct #89
X=1,2,3,4 has probabilities 1/10,1/5,3/10,2/5. Find E(X²).
✅ Step-by-Step Solution
Final Answer: Option (D): 10
- E(X²)=1/10+4/5+27/10+32/5=10.
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