# What is 2 CHOOSE 2 or Value of 2C2? 2 CHOOSE 2 = 1 possible combinations.
1 is the total number of all possible combinations for choosing 2 elements at a time from 2 distinct elements without considering the order of elements in statistics & probability surveys or experiments. The number of combinations for sample space 2 CHOOSE 2 can also be written as 2C2 in the format of nCr or nCk.

n CHOOSE knCkCombinations
1 CHOOSE 11C1
2 CHOOSE 12C12
2 CHOOSE 22C2
2 CHOOSE 22C2
3 CHOOSE 13C13
3 CHOOSE 23C23

## How to Find 2C2 or 2 CHOOSE 2?

The below is the complete work with step by step calculation for 2 CHOOSE 2 may helpful for grade school students to learn how find all possible combinations of 2C2 for sample space S in the statistical experiment or to solve the combinations worksheet problems by just changing the corresponding input values of 2 CHOOSE 2 calculator.

Workout :
step 1 Address the formula, input parameters & values
n = 2
k = 2
Find what is 2 CHOOSE 2?

step 2 Substitute n and r values in below nCk formula

nCk = n!/k! (n - k)!
2 CHOOSE 2 =2!/2! (2 - 2)!

step 3 Find the factorial for 2!, 2! & 0!, substitute the corresponding values in the below expression and simplify.

2C2 = 2!/2! (0)!

=1 x 2/(1 x 2) (1)

= 1/1
= 1/1

2C2 = 1

1 total possible combinations for 2 CHOOSE 2 