A Debating Team of 4 Is to Be Chosen from a Class

question 115

Short Answer

A debating team of 4 is to be chosen from a class of 35.There are two twin brothers in the class.How many possible ways can the team be formed which will not include any of the twin brothers?

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Definitions:

Energy-Wasting

The inefficient use of energy that leads to unnecessary consumption and increased environmental pollution.

Hydropower

A method of generating electricity by converting the energy of flowing or falling water.

Active Solar Heating

A system that uses solar energy to heat a fluid, usually water or air, and then circulates it to transfer heat directly to the interior space or to a storage system for later use.

Heat-Absorbing Fluid

A fluid that absorbs heat during a process, used in various applications such as heating and cooling systems.