8C5: 8 choose 5 work with steps provide the detailed information about what is the total number of possible combinations occur (nCk) while choosing 5 elements at a time from 8 distinct elements without considering the order of elements.
nCk of 8C5:
8 CHOOSE 5 = 56
where,
8 is the total number of distinct elements (n),
5 is the the number of elements drawn or choosen at a time (k),
56 is the total number of possible combination (C).
8C5 Points to Remember:
8C5 is the type of nCr or nCk problem. The below 8 choose 5 work with steps help users to understand the combinations nCk formula, input parameters and how to find how many possible combinations/events occur while drawing 5 elements at a time from 8 distinct elements without considering the order of elements.
Solved Example: :
what is 8 choose 5?
step 1 Address the input parameters and observe what to be found:
Input values:
Total number of distinct elements (n) = 8
The number of elements drawn at a time (k) = 5
What to be found:
Find the total number of possible combinations while choosing 5 elements at a time from 8 distinct elements without considering the order of elements.
step 2 Find the factorial of 8:
8! = 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8
step 3 Find the factorial of 5:
5! = 1 x 2 x 3 x 4 x 5
step 4 Find the factorial of difference between 8 and 5:
(8 - 5)! = 3!
3! = 1 x 2 x 3
step 5 Apply the values of 8!, 5! and 3! in the nCk formula:
nCk = n!/k! (n - k)!
8C5 =8!/5! x 3!
=1 x 2 x 3 x 4 x 5 x 6 x 7 x 8/(1 x 2 x 3 x 4 x 5) x (1 x 2 x 3)
step 6 Simplify the above 8C5 equation:
=1 x 2 x 3 x 4 x 5 x 6 x 7 x 8/(1 x 2 x 3 x 4 x 5) x (1 x 2 x 3)
= 6 x 7 x 8/6
= 336/6
8C5 = 56
Hence,
8 choose 5 equals to 56