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That depends how many are taken for each permutation.
If you take 1 number at a time, then there are 20 permutations.
2 at a time . . . . . (20 x 19) = 380
3 at a time . . . . . (20 x 19 x 18) = 6,840
4 at a time . . . . . (20 x 19 x 18 x 17) = 116,280
5 at a time . . . . . (20 x 19 x 18 x 17 x 16) = 1,860,480
etc.
What else can I help you with?
8 Sum of the numbers from 1 to 20 is?
(1 + 20) x (20/2) ie 210
What is the permutation of 20 numbers ie 1 to 20?
20 objects, be they books, numbers or elephants, can be arranged in 20! different ways. 20! represents 20 factorial, ie 20 x 19 x 18 .... x 3 x 2 x 1 and is a very substantial figure of 19 digits. In scientific notation it is 2.43290200817664 x 1018
What is the average of first 40 natural numbers?
((1 + 40) x 20)/40 ie 20.5
How many permutations are in the word peak?
The first letter of the perm can be any of the 4, the second any of the remaining 3, the third either of the remaining 2. There are thus 4 x 3 x 2 ie 24 permutations.
How many combinations of numbers can be made of 3 numbers if the numbers can be repeated?
10 to the third assuming zero is included and can lead, otherwise 9 to the third, ie 729. This all assumes that you are talking about 3-digit numbers. * * * * * No. That may be the number of permutations but those are different from combinations. In a combiation, the order of the digits does not matter so that 123 is the same as 132 or 213 etc. With repetition, there are 210 COMBINATIONS, including one that is {0,0,0}.
What is the geometric mean between 16 and 25?
GM of two numbers is the square root of their product, in this case sqrt 400 ie 20 (Common Ratio 1¼)
What is 20 percent of 315?
20 x 3.15 ie 63
What is the median 37 18 21 and 24?
In order, the numbers are 18, 21, 24 and 37. Since there are an even number (4) of them, the median is the average of the middle two. ie median = (21+24)/2 = 22.5
Find the number of distinguishable permutations of the letters in the word calculator?
Total permutations 10! ie factorial 10 = 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 = 3628800. The 2 "c"s are interchangeable which halves this figure to 1814400, similarly the "a"s and "l"s are interchangeable which reduces by half twice more, ie to 907200 and then to 453600.
What is the median of 20 18 14 9 27 28 26 16 24?
Put the numbers in order: 9, 14, 16, 18, 20, 24, 26, 27, 28 There are n numbers so the median (the middle one) is the one in position (9+1)/2 ie the 5th. Thus, median = 20.
How many permutations of letters in word bowling?
7 letters so factorial 7, ie 7 x 6 x 5 x 4 x 3 x 2 = 5040
How many combinations of two numbers are there in 16 numbers?
16 x 15 / 2 ie 120
