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A ticket for a prize draw costs 12 rupees. The… | StemPy Lab

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A ticket for a prize draw costs 12 rupees. The organiser has 10 tickets in a box. One of them wins 50 rupees, two win 20 rupees each, and the other seven win nothing. A player buys one ticket from the box at random. What is the expected net gain of the player, in rupees?

MathematicsMediumHigh School (11–12)Statistics and Probability › Random Variables and Probability Distributions AP A-Level IB AEEE (Amrita)AMUEEE AP EAPCET

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A ticket for a prize draw costs $12$ rupees. The organiser has $10$ tickets in a box. One of them wins $50$ rupees, two win $20$ rupees each, and the other seven win nothing. A player buys one ticket from the box at random. What is the expected net gain of the player, in rupees?

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