How to make this Block of python code short and efficient

Question

I am total newbie to programming and python. I was solving a problem. I found the solution but it seems like too slow.

    if n % 2 == 0 and n % 3 == 0 and\\         


        

Answer 1

if all(n % i == 0 for i in range(2, 21)):

all accepts an iterable and returns True if all of its elements are evaluated to True, False otherwise. The n % i == 0 for i in range(2, 21) part returns an iterable with 19 True or False values, depending if n is dividable by the corresponding i value.