Q: Double your tens digit to get your ones digit double you and you are less than 50?

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40

that is 42

9063

63 How did you get this answer? The tens digit must be six. The ones digit must be half that, therefore three.

21 ================ 21 doesn't satisfy the conditions at all, since you can't get ' 1 ' by doubling ' 2 '. I'll suggest that you can be either 12 or 24 .

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40

that is 42

48.

9063

63 How did you get this answer? The tens digit must be six. The ones digit must be half that, therefore three.

That means multiply it by 2. If your tens digit is 3, your ones digit is 6.

21 ================ 21 doesn't satisfy the conditions at all, since you can't get ' 1 ' by doubling ' 2 '. I'll suggest that you can be either 12 or 24 .

3 more than 5 is 8, so the tens digit is 8. The tens digit is,double the number of the ones digit, so divide 8 by 2 and you get 4. If you double 4 it is 8 so, the number is 84.

31.5

If you can ask this question, the answer is obvious. Between the ages of 41 and 49, the only age where the 4 (tens digit) is twice the ones digit is at age 42. Four is two doubled you know....

How about 63 which would comply with the given criteria.

I am a four digit number. My tens digit is 2 more than my ones digit. My hundreds and thousands digit are both 1 less than my ones digit. What number can i be?