If a 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:
2 answers:
Answer:
9
Step-by-step explanation:
APEX
If A=ab and B=ba then A-B=ab-ba which means 10a+b-10b-a=9a-9b=9(a-b)
so A-B is divisible by 9
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