Posted by kaykay on Sunday, March 27, 2011 at 1:40pm.
how many different ways can you pick 2 objects from a set of 7 objects?

math  MathMate, Sunday, March 27, 2011 at 2:04pm
The number of ways to pick m objects from n is
C(n,m) = n!/(m!(nm)!)
So 2 objects from 7 there are C(n,m) [n choose m] ways.
C(n,m)=7!/(5!(75)!)=28
Answer This Question
Related Questions
 Science  Heat flows in which direction? A)from solid objects to liquids B)from ...
 Math  I have a bag with 2 different kinds of objects: 17 cubes, 19 spheres. If ...
 Math  I have a bag with 2 different kinds of objects: 11 cubes, 16 spheres. If ...
 Statistics  I have a bag with 2 different kinds of objects: 11 cubes, 16 ...
 Tech Ed  Which of the following is a benefit that education simulations do not ...
 IPC  i don't have a book or anything to go look all this stuff up so i really ...
 Technology  Which of the following is benefit that education simulations do NOT...
 Science  Steve finds the mass and volume of three different objects. With only ...
 Education technology  Which of the following is a benefit dead education ...
 Physics  Hello, my problem is the next one: There are three objects that are ...
More Related Questions