MHT CET · Maths · Probability
A person throws an unbiased die. If the number shown is even, he gains an amount equal to the number shown: If the number is odd, he loses an amount equal to the number shown. Then his expectation is ₹.
- A 1
- B 1.5
- C 2
- D 0.5
Answer & Solution
Correct Answer
(D) 0.5
Step-by-step Solution
Detailed explanation
Let random variable \(X\) denotes the gain.
\(\therefore \quad\) Probability distribution of X is given as
\(\therefore \quad\) Expectation \(=\frac{-1+2-3+4-5+6}{6}=0.5\)
\(\therefore \quad\) Probability distribution of X is given as
\(\therefore \quad\) Expectation \(=\frac{-1+2-3+4-5+6}{6}=0.5\)
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