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In a game, a man wins a rupee for a six ...

In a game, a man wins a rupee for a six and loses a rupee for any other number when a fair die is thrown. The man decided to throw a die thrice but to quit as and when he gets a six. Find the expected value of the amount he `"wins" // "loses"`.

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The correct Answer is:
`(-91)/(54)`
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