Texas Instruments TI36X User Manual - Page 16

Probability A combination is an arrangement of objects in which order is not important, as in a hand of cards. " ¦ calculates the number of possible combinations of n items taken r at a time. Calculate the number of 5-card poker hands that can be dealt from a deck of 52 cards. 52 . 5 " ¦ O 2598960. A permutation is an arrangement of objects in which the order is important, as in a race. ( x calculates the number of possible permutations of n items taken r at a time. Calculate the number of possible permutations for the 1st-, 2nd-, and 3rd-place finishers (no ties) in an 8-horse race. 8 . 3 ( x O 336. A factorial is the product of the positive integers from 1 to n. (n must be a positive whole number  69.) Using the digits 1, 3, 7, and 9 only one time each, how many 4-digit numbers can you form? 4 " ƒ 24. 15