Sanwu math card
Multiples of 2, 3 and 5 mean that their common multiple is 30, so this number must be a multiple of 30, that is, you must be divisible by 3, and the last digit must be 0, and the sum of hundreds and tens can be divisible by 3, only 5 and 4 and 2 and 4, that is, 540, 450, 240 and 420, that is, 4.