Combinations

[sansalk]

If I got mathematical question for you guysMy set contains 6 different elements
I need to find out how many number of unique possible combinations on that set
What is the maths formula for that.

{PO1,PO2,PO3,PO4,PO5,PO6}

Result must

PO1
PO1,PO2
PO1,PO2,PO3....
Etc.....

 

[DrPhil]

If I got mathematical question for you guysMy set contains 6 different elements
I need to find out how many number of unique possible combinations on that set
What is the maths formula for that.

{PO1,PO2,PO3,PO4,PO5,PO6}

Result must

PO1
PO1,PO2
PO1,PO2,PO3....
Etc.....

Think about a decision tree:
level 1) A subset either does or does not contain PO1
level 2) A subset either does or does not contain PO2
. . .