Question

What if more than two digits are interchanged? Will the difference stiU be divisible by $9$? Illustrate your answer

Solution

VerifiedAnswered 1 year ago

Answered 1 year ago

Step 1

1 of 3Recall that we can figure out if the number is divisible by $9$ if the sum of its digits is also divisible by **9**. Since juggling the digit placements will not affect the sum of all the digits, hence, interchanging any digits should not affect the divisibility of its number.

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