Solve the Problem $c ( n ) = \frac { 1 } { 2 } \left( n ^ { 2 } - n \right)$

question 38

Multiple Choice

Solve the problem.
-The number of different committees of 2 students where the 2 students are selected from a group of n students is given by $c ( n ) = \frac { 1 } { 2 } \left( n ^ { 2 } - n \right)$ n) . How many different committees of 2 students can be selected from a group of 10
Students?

• A)10
• B)20
• C)45
• D)1

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Definitions:

Regio-

A prefix indicating the region or position in a molecule where a chemical reaction takes place.

Syn Diol

A chemical compound containing two hydroxyl groups (-OH) attached to adjacent carbon atoms, often formed via the reduction of an alkene.

Hg(OAc)2

Mercury(II) acetate, a chemical compound used as a reagent in organic synthesis, particularly in oxymercuration reactions.

NaBH4

Sodium borohydride, a reducing agent commonly used in organic synthesis to reduce aldehydes and ketones to alcohols.