Suppose the 5 letters are A, B, C, D and E.
The letter A can either be in the combination or not: 2 options for A.
With each of these options, B can either be in the combination or not: 2 options for B - making 2*2 options so far.
With each of the options so far, C can either be in the combination or not: 2 options for C - making 2*2*2 options so far.
and so on.
So for 5 letters there are 25 = 32 combinations. However, one of these is the combination that excludes each of the 5 letters - ie the null combination. Excluding the null combination gives the final answer of 31 combinations.
120 ABCDE , there are 120 ways these five letters can be rearranged.
5C3 = 10
one hundred and twenty
3 x 5 = 15
Q: How many letters of alphabet can you make using 5 squares?
7,893,600 (seven million, 8 hundred ninety-three thousand, 600) combinations in English.
120 ABCDE , there are 120 ways these five letters can be rearranged.
You can make 5 combinations of 1 number, 10 combinations of 2 numbers, 10 combinations of 3 numbers, 5 combinations of 4 numbers, and 1 combinations of 5 number. 31 in all.
The first digit can be one of five integers (1 to 5) The second - fourth digits one of six integers (0 to 5). So: number of (valid) combinations is 5*6*6*6=1080 * * * * * This gives the number of permutations, not combinations. I am working on the latter.
20
5C3 = 10
Well honey, if you're looking to whip up some four-letter combos from the alphabet soup of a, b, c, d, and e, you've got yourself a total of 5 options for the first letter, 4 for the second, 3 for the third, and 2 for the fourth. Multiply those together and you've got yourself 120 unique combinations. So go ahead and spell out some words, just don't come crying to me if they end up being gibberish!
Only one.
one hundred and twenty
20 different combinations of silverware
3 x 5 = 15
5