Question

I have a learning disability it doesn't effect me until I try to do anything math related I just never get the concept so it would mean a lot if you could answer these questions and make it as easy as possible to understand how you did them thanks.how many groups of seven dogs can be selected from a group of 14?out of 30 animals how many can you select from a group of 3?there are 12 singers in a choir how many groups of four can you choose to sing?in a club of 25 how many groups of five can you choose to run a bake sale?

Answer 1

`\begin{gathered} \text{When we have a group of`
`\begin{gathered} \text{The groups of seven dogs that can be selected grom a group of 14 is} \\ 14C7=(14!)/(7!(14-7)!)=\frac{87178291200}{5040\cdot\text{ }5040} \\ =(87178291200)/(25401600)=3432 \\ \\ \text{Thus, there are 3432 ways to make groups of seven dogs from a group of 14} \end{gathered}`