You have 4 different markers. If you want to choose 2 , how many different combinations can you make?
4C2 = 4! / (2! * 2!)
I the order of choosing doesn't matter, then
C(4,2) = ....
4 combinatons
To find the number of different combinations that can be made when choosing 2 markers out of 4, you can use the concept of combinations.
The formula for combinations is given by nCr = n! / (r!(n-r)!), where n is the total number of items and r is the number of items to be chosen.
In this case, we have 4 markers and we want to choose 2 of them. Using the formula, we can calculate the number of combinations:
4C2 = 4! / (2!(4-2)!)
= 4! / (2!2!)
= (4 * 3 * 2 * 1) / ((2 * 1) * (2 * 1))
= 24 / (2 * 2)
= 24 / 4
= 6
Therefore, there are 6 different combinations that can be made when choosing 2 markers out of 4.