Compute the Number of Ways You Can Select $n$ Elements From $N$

question 221

Essay

Compute the number of ways you can select $n$ elements from $N$ elements for $n = 6$ and $N =$ $15 .$

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Definitions:

Secondary Alcohol

An alcohol in which the hydroxyl group (-OH) is attached to a carbon atom that is connected to two other carbon atoms.

Ethylmagnesium Bromide

A Grignard reagent with the formula CH3CH2MgBr, used in the formation of carbon-carbon bonds in organic synthesis.

Aqueous Acid

An acid dissolved in water, yielding H3O+ ions, and characterized by a pH less than 7.

Reaction Product

A chemical substance resulting from a chemical reaction.