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[Math]How many 4-digit numbers between 5,000 and 10,000 are odd number?


Tendo J Cai

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How many 4-digit numbers between 5,000 and 10,000 are odd number?

(A)200

(B)400

©1000

(D)2500

(E)3000

 

I got 400 which is chose B, but I am not sure, So i am asking you guys how you do that correctly. And please give me a tips doing this type of counting digits question.

Thanks for everyone helped !

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