Just 1.
2, 3 and 5 go into multiples of 30.
150 factors as 2 * 3 * 5 * 5 .
3 and 5, yes. 2, 9 and 10, no.
One, remainder 2
1 and 2/3 times
The LCM is 30
The smallest number in which 2, 3, 4, and 5 go into is 60.
The code works if you count the keys from left to right on the piano. First key on the left it #1, second from the left is #2 and so on. 5, 3, 2, 1, 2, 3, 5, 3, 2, 1, 2, 3, 5, 3, 5, 6, 3, 6, 5, 3, 2, 1
2, 3, and 5 are prime factors of 60 2 times 2 times 3 times 5 = 60
2, 3 and 5.
2, 3 and 5
2 x 3 x 3 x 5 x 5