answer these 3 questions ASAP pls..

a. Is 15 a multiple of 4?
is 4 a factor of 15

b. Is 20 a multiple of 5?
Is 20 a factor of 5?


c. is 100 a multiple of 8
is 8 a factor of 100?


thank u for doing this makin you brainliest..........(loadin)