A number

, where

are distinct prime numbers, has

divisors.
We know that

has 7 divisors. 7 is a prime number, so among the numbers

there is only one that is equal to 7.
So,

That means

where

is a prime number.

, therefore the

has

divisors.
Multiplicative inverse of 7 is 1/7
60 inches because 1 week can equal 12 inches because 24 divided by 2 is 12
Yes, that relation is a function. It has no repeating x values