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Pick 5 of 7 numbers how many combinations are there

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There are 21 ways of picking five items out of seven.

Posted on Nov 20, 2013

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Pick 5 numbers ranging from 1-75. How many combinations do you come up with


this is covered in the theory of probability formula
to get the answer go google and type in theory of probability and the formula and explanation are on the pages

Aug 31, 2015 | Kitchen Ranges

1 Answer

How many 5 digit combinations would it take out of 15 numbers(1-15)in order to have all possible combinations


I assume that repetition of numbers can't happen, and the order of numbers does not matter

So it is n! / (r! (n-r)!)
= 15! / (5! (15-5)!)
= 1307674368000 / (120 (3628800)
= 3003 combinations

Feb 13, 2015 | Computers & Internet

1 Answer

5 number combination list


Too many to list (3,125). It would take you forever to get it unlocked. I would suggest bolt cutters and just spend the 20-30 bucks to buy a new one.

Aug 22, 2014 | Kensington Black Portable Combination Loc

1 Answer

Where is the combination button


On any SHARP scientific calculator the combination button is always above the 5 (except the financial calculator). To get a combination type in the n value (the total number of items) press 2nd F and the 5 button and then type in the number of selected items and press =.

May 29, 2014 | Sharp EL-531VB Calculator

2 Answers

Does anybody know how many different combinations there are for the numbers 1, 2, 3, 4, 5 and 6?


That depends on how many of those six numbers you take.
If you only take one number, there are six combinations: {1}, {2}, {3}, {4}, {5}, and {6}.
If you take two numbers, there are fifteen combinations: {1,2}, {1,3}, {1,4}, {1,5}, {1,6}, {2,3}, {2,4}, {2,5}, {2,6}, {3,4}, {3,5}, {3,6}, {4,5}, {4,6}, and {5,6}.
If you take three numbers, there are twenty combinations.
If you take four numbers, there are fifteen combinations.
If you take five numbers, there are six combinations.
If you take all six numbers, there is only one combination: {1,2,3,4,5,6}.
In general, if you take 'm' objects out of a set of 'n' objects, the number of combinations is given by n!/[(m!)(n-m)!] where '!' is the factorial operator.

Apr 30, 2013 | Mathsoft Computers & Internet

1 Answer

How many combinations for the numbers 1, 2, 3, 4, 5 and 6?


That depends on how many of those six numbers you take.
If you only take one number, there are six combinations.
If you take two numbers, there are fifteen combinations.
If you take three numbers, there are twenty combinations.
If you take four numbers, there are fifteen combinations.
If you take five numbers, there are six combinations.
If you take all six numbers, there is only one combination.
In general, if you take 'm' objects out of a set of 'n' objects, the number of combinations is given by n!/[(m!)(n-m)!] where '!' is the factorial operator.

Apr 30, 2013 | Home Security

1 Answer

How do i solve this factorial equation? 8!/5!x3!


How to calculate 8!/(5!3!)?
For small numbers (8,5,3) you can use the factorial function key (I will tell you later how to access it) and enter 8! divided by 5!, divided by 3! For numbers greater than or equal to 70 you cannot calculate the factorial: the result is too large for the calculator's memory.

However the formula you wrote is an instance of a combination 8C5 or 8C3 (they have the same value.
Most scientific calculator have three functions: the n Factorial n!, the Combination function nCr and the permutation function nPr.

  1. Turn Calculator ON
  2. Select the Run icon and press EXE.
  3. In Run Screen Press the OPTN key
  4. Press F6> to pan to the other tabs
  5. Press F3:Prob
The first tab (F1) is marked x!.That is the factorial.
The tab (F2) is marked nPr is for the permutations
The tab (F3) is marked nCr and it corresponds to the combinations.

To use nPr or nCr you enter the larger number n, you press the F key under nPr or nCr. If you press F2 you see a fat P, if you press F3 you see a fat C. Complete by entering the value of r (the smaller number)
If your problem corresponds to Select 8 objects, 5 at a time regardless or order (combinations) you type 8 F3 5 and EXE Result is 56.

Aug 31, 2012 | Casio CFX 9850GA Plus Calculator

1 Answer

Number pad


You can't make the alternate characters like °, ®, ♂, σ etc with a combination number pad. You need to have a seperate number pad. I use a $20 plug in keyboard.

Oct 29, 2009 | Dell Latitude D505 Notebook

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