If you have three friends, how many ways can you introduce them to someone

Step-by-step explanation:

Here there are three friends.  The number of ways of introducing them to someone is the same as the number of ways of arranging three objects in a row.

Hence this is equal to 3! ways

3!=3x2x1=6 ways

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.