Question

If number A is a 2-digit number and its digits are transposed to form number B, then the difference between the larger of the two numbers and the smaller of the two numbers must be divisible by _____.
A.8
B.7
C.9
D.an even number

Answer 1

If the original number is ab it has a value of

10a+b  when it is reversed it will have a value of 10b-a

10b+a-10a-b  is the differences which is equal to

9b-9a

So the numbers must be divisible by 9

Answer 2

Answer:

9 is the correct answer

Step-by-step explanation:

Apex