Changes

<div style="font-size:30px">'''COMBIN(number,Numberchosen)'''</div><br/>

<div style="font-size:30px">'''COMBIN(Number,Numberchosen)'''</div><br/>

*<math>Number</math> is the number of items.

*<math>Number</math> is the number of items.

==Description==

==Description==

*This function gives the combination of <math>Number</math> objects.  

*This function gives the combination of the given number of objects.  

*i.e An arrangement of <math>Numberchosen</math> objects without any repetition, selected from <math>Number</math> different objects is called a combination of <math>Number</math> objects taken <math>Numberchosen</math> at a time.

*Let Number be "n" and Number chosen be "r".

*So the Combinations is an arrangement of <math>r</math> objects without any repetition, selected from <math>n</math> different objects is called a combination of <math>n</math> objects taken <math>r</math> at a time.

*For example consider three colors, like Blue,Yellow,Pink.There are three combinations of two can be drawn from the set:Blue and Yellow,Blue and Pink,or Yellow and Pink.

*If the order is not a matter, it is a Combination.  

*If the order is not a matter, it is a Combination.  

*If the order is a matter it is a Permutation.

*If the order is a matter it is a Permutation.

*A combination is denoted by nCr or <math>\binom{n}{r}</math> or <math>C(n,r)</math>.  

*A combination is denoted by nCr or <math>\binom{n}{r}</math>.  

*A formula for the number of possible combinations of <math>r</math> objects from a set of <math>n</math> objects is:

*A formula for the number of possible combinations of <math>r</math> objects from a set of <math>n</math> objects is:

  <math>\binom{n}{r}=\frac{n!}{r!(n-r)!}</math>  

  <math>\binom{n}{r}=\frac{n!}{r!(n-r)!}</math>  

**<math>Numberchosen</math> is the  number of items in each arrangement.

**<math>Numberchosen</math> is the  number of items in each arrangement.

**For e.g.,COMBIN(20..23,6..7)

**For e.g.,COMBIN(20..23,6..7)

==Examples==

==Examples==