Even though your question is incomplete, I think the answer is 99999 x 102.

Paul M.
tutor
Thanks. The answer I gave is correct.
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11/24/21

David W.
You are correct that 00000 is not "a positive integer," but you assumed that category numbers are also positive integers.
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11/24/21

Paul M.
tutor
Yes, David W.; you are correct. Since I have never seen a license plate with a negative integer as part of the license #, the only number for which I did not account is 0, of course, which would change the answer to 99999*101.
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11/24/21
Mhd H.
Abu Dhabi traffic police produces car number plates by choosing a positive integer less than 100,000 followed a category number no exceeding 100.How many different car plates can Abu Dhabi traffic police produce using these criteria? This is the full question, sorry for the incomplete question.11/24/21