answersLogoWhite

0


Best Answer

The number of R-combinations in a set of N objects is C= N!/R!(N-R)! or the factorial of N divided by the factorial of R and the Factorial of N minus R. For example, the number of 3 combinations from a set of 4 objects is 4!/3!(4-3)! = 24/6x1= 4.

User Avatar

Wiki User

15y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How can you Find the number of combinations of objects in a set?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is possible combinations of a set of objects?

A set of n objects has 2n combinations. In each combination, each element can either be included or excluded. Two possibilities for each of n objects. One of these combinations will be the empty set - where none of the objects are selected.


Is the number of permutations of two items from a data set is always two times the number of combinations when taking two objects at a time from the same data set?

Yes


How do you find all the combinations of a list?

To find the number of combinations possible for a set of objects, we need to use factorials (a shorthand way of writing n x n-1 x n-2 x ... x 1 e.g. 4! = 4 x 3 x 2 x 1). If you have a set of objects and you want to know how many different ways they can be lined up, simply find n!, the factorial of n where n is the number of objects. If there is a limit to the number of objects used, then find n!/(n-a)!, where n is the number of objects and n-a is n minus the number of objects you can use. For example, we have 10 objects but can only use 4 of them; in formula this looks like 10!/(10-4)! = 10!/6!. 10! is 10 x 9 x 8 x ... x 1 and 6! is 6 x 5 x ... x 1. This means that if we were to write out the factorials in full we would see that the 6! is cancelled out by part of the 10!, leaving just 10 x 9 x 8 x 7, which equals 5040 i.e. the number of combinations possible using only 4 objects from a set of 10.


Could you generate a complete set of 6 number combinations from 45 numbers?

Could you generate a complete set of 6 number combinations from 45 numbers ?


How many possible combinations is there with 1379?

To calculate the number of possible combinations of the digits 1, 3, 7, and 9, we can use the formula for permutations of a set of objects, which is n! / (n-r)!. In this case, there are 4 digits and we want to find all possible 4-digit combinations, so n=4 and r=4. Therefore, the number of possible combinations is 4! / (4-4)! = 4! / 0! = 4 x 3 x 2 x 1 = 24. So, there are 24 possible combinations using the digits 1, 3, 7, and 9.


How can you find the number of permutations of a set of objects?

If there are n different objects, the number of permutations is factorial n which is also written as n! and is equal to 1*2*3*...*(n-1)*n.


Is there any formula to find the possible gamete combintions when diploid number is given?

A general form for finding a given number of combinations for a chosen sub-set of numbers from a set is Cr(n, r) = n!/r!(n-r)!


What is the number of ways to arrange 8 objects from a set of 12 different objects?

2.026


If you have a set of 40 numbers how do you calculate the number of all the possible combinations of 5 numbers from the set?

By making a number tree that could have as many as 1,000,000 combos.


What do you call the numbers of a set?

The objects within a number set can be caled as "Elements" or "members".


How do you find the cardinal number to a set?

Count the number of distinct elements in the set.


What is the number of ways to arrange 5 objects from a set of 9 different objects?

9×8×7×6×5=15,120