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The answer depends on what the tens digit is greater than, and what the ones digit does then.

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Wiki User

6y ago
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Wiki User

6y ago

Well, if the tens digit is 1, you have 1 option for the ones digit; if the tens digit is 2, you have two options for the ones digit, if the tens digit is 3, you have 3 options for the ones digit, etc.; up to: if the tens digit is 9, you have 9 options for the ones digit. Add all that up (1 + 2 + 3 + ... + 9).

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Anonymous

Lvl 1
3y ago

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