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Q: The sum of the digits of a two digit number is 16 if the digits were reversed and the new number were added to the original number the sum would be 176 find?

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35 + 18 = 53

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19

The answer is 39. 3+9=12, 3x9=27. 12+27=39.

A two digit number whose two digits added together equal 42 and multiplied together equal 82

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The no. is 35.

45

35 + 18 = 53

100000 2847239582

38

No. To find if a number is a factor of 3, add the number's digits. If the resulting number is a multiple of 3, then the original number is a multiple of 3. In 4339, the digits of the number added together is 19, which is not a multiple of 3.

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Yes it is - the answer is 58. To check if a number is divisible by 3, add all the digits together. If the sum of the digits will divide by 3 exactly - then so will the original number. In this case, the digits added total 12. The rule also works when dividing by 9 (but the digits must total nine, not three obviously !)

Nope - 1038 is an even number and thus is divisible by 2. Its digits added together total 12 - which is divisible by 3... therefore the original number is also divisible by 3 !!

In a measurement the digits that are an approximation are only those in proper scientific notation. The more digits that are added to the number the more the number becomes exact.

Five

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