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The face cards are moved from a full pack. Out of the remaining 40 cards, 4 are drawn at random. What is the probability that they belong to different suits?

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Let` P (E)` be the probability that all card belong to diifferent suit.
Now, Out of the remaining 40 cards, 4 are drawn
`40(C_4)= 91390 `
Let E be the event that `4 `cards belong to different suit.
`n (E) = (10_(C_1))(10_(C_1))(10_(C_1))(10_(C_1)) = 10000 `
Now, ...
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