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maths and state questions
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A poker hand of 5 cards are selected from a deck of 52 playing cards. How many different poker hands containa)all spades?b)3Aces and 2 King?c)4cards with identical number of letter?An examination paper has 3sections A,B and C. A student must do 4 out of 7 questions in section A, 3 out of 5 questions in section... 顯示更多 A poker hand of 5 cards are selected from a deck of 52 playing cards. How many different poker hands contain a)all spades? b)3Aces and 2 King? c)4cards with identical number of letter? An examination paper has 3sections A,B and C. A student must do 4 out of 7 questions in section A, 3 out of 5 questions in section B and 2 out of 3 questions in section C. In how many different ways can a student sttempt the paper?
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1a) 13/52 x 12/51 x 11/50 x10/49 b)4/52x3/51x2/50x4/49x3/48 c)8x8/52x7/51x6/50x5/49 2) 7C4 x 5C3 X 3C2 唔知有無記錯ga...
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