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How many permutations and combinations are there of 8 objects taken 5 at a time?
Wiki User
∙ 11y ago
For the permutation the equation is (8!)/(5!) assuming there is no replacement. Which is 8*7*6 = 336
For combinations the equation is (8!)/((5!)(8-5)!) = (8!)/((5!)(3)!) = (8*7*6)/(6) = 56
Wiki User
∙ 11y ago
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Why does the formulas permutations and combinations make sense?
There are many formules
How many winning trifecta combinations are there in a race with 20 horses?
Trifecta bets are permutations, not combinations, and there are 6840 of them.
How many combinations of 3 out of 10?
720 permutations (the arrangement matters) 120 combinations (the arrangement doesn't matter)
How many 4 number combinations are there using 1 2 3 4 5?
There are 120 permutations and 5 combinations.
How many combinations does 3 tick-boxes have?
There are only four combinations but there are 8 permutations.
How many combinations can be made from 32 items taken 4 at a time and how do you do it?
Do a web search for "permutations and combinations" to find the how. I make it 35,960.
How many permutations and combinations are there of 4 objects taken 3 at a time?
Permutations = 4 x 3 x 2 = 24Combinations = (4 x 3 x 2) / (3 x 2 x 1) = 24/6 = 6
Why does the formulas permutations and combinations make sense?
There are many formules
How many winning trifecta combinations are there in a race with 20 horses?
Trifecta bets are permutations, not combinations, and there are 6840 of them.
How many combinations of 3 out of 10?
720 permutations (the arrangement matters) 120 combinations (the arrangement doesn't matter)
How many 4 number combinations are there using 1 2 3 4 5?
There are 120 permutations and 5 combinations.
How many combinations of 8 objects are there taken 2 at a time?
8*7/(2*1) = 28
How many 3 number combinations are possible with 1234?
Just 4: 123, 124, 134 and 234. The order of the numbers does not matter with combinations. If it does, then they are permutations, not combinations.
How many combinations are there in a seven digit phone number?
There is only one combination. There are many permutations, though.
How many combinations can you make with 90 3?
Combinations from 90 objects, taken 3 at a time is 90C3 = 90*89*88/(3*2*1) = 117,480.
How many times a three digit number is divisible by 5 in permutations and combinations?
It depends on how many digit you are choosing from.
How many combinations does 3 tick-boxes have?
There are only four combinations but there are 8 permutations.
