Choose the correct definition of (n/k) from below a. k! /n! (n-k)! b. n! /(n-k)! c. n! /k! (n-k)! d. n! /k! (k-n)!

C.  

Step-by-step explanation:

We know that a combination is a collection of the items where the order doesn't matter. It is a way to calculate the total outcomes of an event where order of the outcomes does not matter. It is denoted by C(n,k) or (n,k) or (n/k).

The formula for the number of combinations of n things taken r at a time is given by :-

Hence, C is the right option.

Combination helps us to find the number of ways. The correct definition that describes the combination (n/k) is .

A combination helps us to find the number of ways something can be selected from a set. It is given by the formula,

Where n is the total number of choices in the set, r is the number of choices we want.

Given to us

(n/k)

The correct definition that describes (n/k) using the combination formula

Hence, the correct definition that describes the combination (n/k) is .

Learn more about Combination:

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answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true