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 Sujet: number combinations
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 4 number combinations 2009-09-10 jeremy pose la question :Here's my question... I've been playing the lottery, I know what a waste of time. I would like to know how many 4 number combinations can be derived from a set of 10 numbers, when no number can be repeated in the present string of 4 numbers being selected.Robert Dawson and Harley Weston lui répond. Missing three digits in a phone number 2009-01-30 Elmer pose la question :I have part of a phone number. the first 3 digits are 212, the last digit is four, and the three missing digits are all odd, how many numbers will I have to call to get the right number? 212- _ _ _ 4?Stephen La Rocque and Penny Nom lui répond. Phone number combinations 2007-01-04 Efrain pose la question :i want to know the different combinations for numbers 7 digits the number are 0-9 its basically the different phone number combinations example: 555-6689 or 565-4896 i just want to know for many different combinations are there....Penny Nom lui répond.

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