Question

How is it done ?
Explain me please ​

Answer 1

1) 78*964

7+8+2+9+6+4 = 36 which is a multiple of 9 .

so it is divisible by 9

2) 75*

752 . since the last two digits that is 52 is a multiple of 4 .so it is divisible by 4

3) 2*345

2+1+3+4+5 = 15 which is a multiple of 3 . so it is divisible by 3

Answer 2

Answer:

how 75* may be divisible by 4 ? explain