Evaluare the expression A combination is an arrangement of items but not in

Kyran Hudson

Kyran Hudson

Answered question

2021-09-21

Evaluare the expression
A combination is an arrangement of items but not in particular order. Any arrangement of r objects selected from a single group of n possible objects. The order of arrangement is not important in combination.
Here in our problem, (n=4),(r=2), we need to substitute it in the formula.

Answer & Explanation

delilnaT

delilnaT

Skilled2021-09-22Added 94 answers

Formula used:
Combination formula C(n,r)=n!(nr)!r!, where n is the total number of objects and r is the number of objects seslected.
Calculation:
DescriptionC(4,2)Step1:Substitute the value of n and r in the equation formula.C(4,2)=4!(42)!2!=4!(2)!2!   =4×3×2!2!   ×2×1    =2×31C(4,2)=6
Conclusion: The combination of the expression is 6.

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