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How many four digit numbers cannot be divided by 5?
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How many four digit numbers cannot be divided by 5?

User Mike Ramsey
by
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1 Answer

5 votes

Answer:

7200

Explanation:

Since the first digit cannot be zero,

there are 9*10*10*10 = 9000 4-digit numbers.

Each of these with a last digit not equal 5 or 0 is not divisible by 5.

Therefore, there are 8 choices of last digit

9*10*10*8 = 7200

User Amoskaliov
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5.2k points
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