formula to find out how many different combinations?
239304
The formula for combinations is nCr = n! / r! * (n - r)!, where n represents the number of items, and r represents the number of items being chosen at a time. John is selecting three toppings from the eight offered by Pizza King.
444594
The number of combinations of n distinct objects, taken r at a time is: Cr = n! / r! (n - r)! Thus, 27,405 different groupings of 4 players are possible.
431578
['On the Home screen, enter n, the total number of items in the set. ... ', 'Press. ... ', 'Press [2] to evaluate a permutation or press [3] to evaluate a combination.', 'Enter r, the number of items selected from the set, and press [ENTER] to display the result.']
392075
You want to know how many ways different sets of five numbers (you say digits, but since they go up to 20 I think you mean numbers) out of 20. The answer is called “20 choose 5” and it equals 20! / [5!*( 20 = 5)!], or written out 20*19*18*17*16/(5*4*3*2*1). It's 15,504.
29502
Looking at the equation to calculate combinations, you can see that factorials are used throughout the formula. Remember, the formula to calculate combinations is nCr = n! / r! * (n - r)!, where n represents the number of items, and r represents the number of items being chosen at a time.
461583
Answer: There are 9,999 different combinations in a 4-digit lock. And now we have 1,000+9,000=10,000 combinations total.
387357
Assuming the digits 0 through 9 can be used, and a number can be repeated in the combination, then there are 10^3 possible combinations (1000 - from 000 to 999). If three different numbers have to be used, then 10 x 9 x 8 = 720 possible combinations.
278994
It's the same as possibilities to a 6 digit code with known numbers and no repeats. With 1 item there are 6 possibilities with 2 you only have 5 choices after the first if you don't repeat the same item. So for 6 items the equation is as follows 6*5*4*3*2= 720 possible combinations of 6 items.
295474
Given 100, choose 99, there are 100 combinations. Given 100, choose 98, there are 161,700 combinations. The number of combinations gets bigger fast. 100, choose 95, is over 7 million combinations.
1116347
Dana F Anderson, Just interested in math is all. Kinda a hobby. Assuming the digits 0 through 9 can be used, and a number can be repeated in the combination, then there are 10^3 possible combinations (1000 - from 000 to 999). If three different numbers have to be used, then 10 x 9 x 8 = 720 possible combinations.
1277433
Member. No. If you want to count the number of unique combinations of any number of keys, just notice that each key can be either used or not used, so there are 2^88 combinations exactly.
470845
['Summary. The Excel COMBIN function returns the number of combinations (in any order) of a given number of items. ... ', 'Get total number of combinations.', 'Total possible combinations as an integer.', '=COMBIN (number, number_chosen)', 'number - The total number of items. ... ', 'A combination is any a group of items in any order.']
955838
There are 3 numbers. So the number of permutations (arrangements) of three items equals 1 x 2 x 3 = 6. Thus, there are six permutations per combination. The number of combinations therefore is 6480 / 6 = 1080.
176805
Where 1,2,3 are the possible options and 3 is the number of repetitions. This will give an array of the 27 different combinations you can achieve.
17604
With three columns, each with ten possibilities, the number of total combinations is 10 × 10 × 10, or 1000. With three switches, each with two possibilities, the number of total combinations is 2 × 2 × 2, or 8.
233039
['Step 1: Open the sheet. You first need to open the sheet with data from which you want to make all possible combinations. ... ', 'Step 2: Select cell for result. You now need to select a cell where you want to have the result of possible combinations to appear. ... ', 'Step 3: Drag the formula to other cells.']
117141
To calculate combinations, we will use the formula nCr = n! / r! * (n - r)!, where n represents the number of items, and r represents the number of items being chosen at a time. To find the probability of an event, you may have to find the combinations.