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Q: What is 81 over 9 as a whole number?

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There is no whole number - 81/90 in its simplest form is 9/10 !

They are -9 and 9.

9/2 can't be a whole number.

Examples of such numbers are 49, where sqrt(49) = 7, 81, where sqrt(81) = 9. Such numbers are called square numbers.

No because 7/9 is a fraction which is not a whole number

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9

There is no whole number - 81/90 in its simplest form is 9/10 !

Factors are just numbers 81 can be divided by. The whole number factors are 1, 3, 9, 27, and 81

They are -9 and 9.

9 (92 = 81)

The square number of 81 is 9. 9 x 9 = 81

9/2 can't be a whole number.

9/24 is not a whole number, so no whole number is equivalent to it.

no it's not a whole number.

Examples of such numbers are 49, where sqrt(49) = 7, 81, where sqrt(81) = 9. Such numbers are called square numbers.

No, 82 is not a multiple of 9 because 9 can not be multiplied by any whole number to get 82. (9x9=81, 9x10=90, there is no 82 in between).

Factors of 81 in pairs = 1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1.