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hba

  • 2 years ago

How many 2 digit number satisfy the following conditions: The units digit is smaller than the tens digit :

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  1. hba
    • 2 years ago
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    50 45 35 30

  2. hba
    • 2 years ago
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    @experimentX Is C the answer.

  3. experimentX
    • 2 years ago
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    first and the last

  4. hba
    • 2 years ago
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    What about the third one ?

  5. experimentX
    • 2 years ago
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    5 > 3

  6. chihiroasleaf
    • 2 years ago
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    I think you should find the possibilities, for example, if the tens digit is 1, so there is only one number, if the tens digit is 2, there are 2 possibilities, and so on...

  7. hba
    • 2 years ago
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    Thank you.

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