A civil air patrol unit of fifteen members includes two two officers. in how many ways can four members be selected for a search and rescue mission such that at least one officer is included?

1365 ways

Explanation: this is a combination questions

n = 15

r = 4

Solution

15C⁴

= n! / r! (n-r)!

= 15! / 4! ( 15-4)!

= 15! / 4! (11)!

= 1.308 *10¹² / 24(39916800)

= 1365 ways

what's the

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy