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apple Asked:

1.both digits are greater than 3. 2.the sum ...

1.both digits are greater than 3.

2.the sum digits is greater than 15.

3.the number is not odd.

4. the tens digit is greater than one digits.

Use this to find out the haus number 100.

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Answers

Ian
Ian Answered:

Possibilties before rules:

UNITS: 1 2 3 4 5 6 7 8 9

TENS: 1 2 3 4 5 6 7 8 9

Rule 1: Digits are greater than 3, so new possibilities are

UNITS: 4 5 6 7 8 9

TENS: 4 5 6 7 8 9

Rule 2: Sum of digits greater than 15, (i.e. 16 or more),

but we know unit digit cannot be more than 9,

so new possibilities are

UNITS: 7 8 9

TENS: 7 8 9

combined in these possible options,

79. 88, 89, 97, 98, 99

Rule 3: The number is not odd, so new possibilities are

88, 98

Rule 4: The tens digit is greater

It must be 98

Regards - Ian

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