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What are chances of 4 aces being in a hand of 9 cards?

The probability of 4 aces being in a hand of 9 cards is: 9C4 ∙ (4/52)∙(3/51)∙(2/50)∙(1/49)∙(48/48)∙(47/47)∙∙∙(44/44) = 0.0004654... ≈ 0.0465% where 9C4 = 9!/[(9-3)!∙3!] = 126


How many sets of 4-digits numbers can be created from the digits 1 2 3 4 5 6 7 8 9?

There are: 9C4 = 126


How many strings of length 9 have five 1's and four 0s?

126. In mathematical notation it could be written as 9C4 or 9C5. It is known as the binomial coefficient.


How many ways can a 9 digit number be made using four 5s and five 4s?

The answer is 9C4 = 9*8*7*6/(4*3*2*1) = 126 ways.


Find the probability of selecting 3 science books and 4 math books from 8 science books and 9 math books The books are selected at random?

(8C3 x 9C4)/17C7= (56 x 126)/19448= about 36.3%


What is the difference between ' equals equals ' and ' equals equals equals?

one equals


What does this mean 8 equals equals equals equals equals equals equals equals equals equals D?

That 8 might equal D. Trashed. "Eight Equals D" is: 8=D Which is a penis smiley -.- ~ Skullcandy88


What is a trick that is spelled the same way equals D equals D equals D equals D equals D equals D?

equals D repeater


What does 8 equals equals equals equals equals equals D mean?

(It's a penis) 8=====D 8 = balls D = head


What number is spetember if January equals 73 February equals 83 March equals 51 April equals 52 May equals 31 June equals 42 July equals 41 August equals 63 September equals?

93


What number is spetember if January equals 73 february equals 83 march equals 51 April equals 52 may equals 31 June equals 42 July equals 41 august equals 63 September equals and what is logic?

93


If 23 equals 71 24 equals 98 25 equals 127 26 equals 158 then 27 equals?

27 equals 191