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In a lottery, a' person choses six diffe...

In a lottery, a' person choses six different natural numbers at random from 1 to 20, and if these six numbers match with the six numbers already fixed by' the lottery committè, he wins the prize. What is the próbability of winning the prize in the game?

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Out of 20 numbers, 6 numbers can be drawn in . ^20 C_6. ways. So total number of elementary events.= . ^20 C_6=38760. .therefore. Required probability .=1/38760.
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