Find the 4th Term in the Binomial Expansion $$( z + y ) ^ { n }$$

question 210

Multiple Choice

Find the 4th term in the binomial expansion. $$( z + y ) ^ { n }$$

• A) \(\frac { ( n - 3 ) ! } { ( n - 3 ) ! 3 ! } z ^ { n - 3 } y ^ { 3 }\)
• B) \(\frac { n ! } { ( n - 4 ) ! } z ^ { n - 4 } y ^ { 4 }\)
• C) \(\quad \frac { n ! } { ( n - 3 ) ! 3 ! } z ^ { n - 3 } y ^ { 3 }\)
• D) \(\frac { n ! } { ( n - 4 ) ! 4 ! } z ^ { n - 4 } y ^ { 4 }\)
• E) \(\frac { n ! } { ( n - 3 ) ! 3 ! } z ^ { n - 3 } y ^ { n }\)

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Definitions:

Christmas Trees

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Differential Cost

The difference in cost between two alternative decisions, or a change in cost from one period to the next.

Incremental Cost

The additional cost that a company incurs when producing one more unit of a product.

Incremental Costs

Costs that change as a result of a decision to increase or decrease the level of an activity or operation.