There are 3 such numbers: 30, 60, 90.
They are multiples of 60.
6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96,102 and blah, blah, and blah and so on..... There's 15 multiples of six for ya.
Only multiples of six which are evenly divisible by six are multiples of 12.
Any multiple of 30.
30, 60, 90, 120, 150
20, 40, 60, 80, 100, 120 * * * * * These are the first six multiples!
30, 60, 90
6, 12, 18, 24, 30
Well 5x6 has only one answer: 30 But respectably the first five multiples of five are 5,10,15,20 and 25 And the first five of six are 6,12,18,24 and thirty
6, 12, 18, 24, 30
There are an infinite number of multiples of six.