某二位數可以被4整除 個位數加十位數等於5 下列哪個數字也可以被二位數整除? A.6 B.7 C.8 D.9?

let the number be AB.
AB can be 14, 23, 32, 41, 50
only 32 can be divided by 4.
Therefore AB is 32

32 / 6 = 5 ... 2
32 / 7 = 4 ... 4
32 / 8 = 4 ... 0 (CORRECT)
32 / 9 = 3 ... 5

Therefore, the answer is C, 8

我知道是32 但是為什麼是32
有公式之類的嗎

i knew ab is32
but why ab is 32?
have formula or something can confirm..?