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Tutors Answer Your Questions about Permutations (FREE)
Question 236899: Prove that there must be at least 2 students at a college with the same last four digits of a social security number
So far, I've tried reasoning that there are 10 possible digits, and i have to choose 4 of them, so it would be a combination/permutation of 10 choose 4. (i'm not sure which one it is though) and where do I go from there
Click here to see answer by scott8148(3385)   |
Question 236899: Prove that there must be at least 2 students at a college with the same last four digits of a social security number
So far, I've tried reasoning that there are 10 possible digits, and i have to choose 4 of them, so it would be a combination/permutation of 10 choose 4. (i'm not sure which one it is though) and where do I go from there
Click here to see answer by edjones(3299)  |
Question 241278: You order twelve burritos to go from a Mexican restaurant, five with hot peppers and seven without. However, the restaurant forgot to label them. If you pick three burritos at random, find the probability that at least two have hot peppers. (Round the answer to three decimal places.)
My mother told me 0.36 but my teacher said it was wrong. Could you please help me.
Click here to see answer by Theo(675)  |
Question 241523: A poker hand consists of five cards from a standard deck of 52. Find the number of different poker hands of straight (five cards of consecutive denominations: A, 2, 3, 4, 5 up through 10, J, Q, K, A, not all of the same suit). (Note that the Ace counts either as a 1 or as the denomination above King.)
Click here to see answer by stanbon(26297)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720
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