18.66 the six repeats for ever
120
Any multiples of 60 are divisible by 60
Any 2 from 6 = 6 x 5/2 = 15
You can use long or short division.
9
1
50
1: Because the songs he sings are different in many ways and require him to sing differentily for them. 2: His voice is great enough that he can.
Quotient
4
It is not possible
-- If you want the two pieces to be equal size, then there's only one way. -- If the two pieces can be different sizes, then there are 500,000 ways.