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9 x 9 = 81

9 squared = 81

3 squared times 3 squared = 81

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โˆ™ 2016-02-15 19:16:59
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Algebra

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Related questions

Why 81 have an odd number of factors and 40 have an even number of factors?

A number will have an odd number of factors if and only if one of those factors is the square root of the number. This is because any factor of a number you can find must pair up with another factor of that number, and multiply to give the number. The only exception is when the factor would be paired with itself. In other words, be the square root. 81 is a square number, and so the factor 9 (square root of 81) will not pair with any other factor, meaning 81 will have an odd number of factors. 40 has an even number of factors, because it is not a square number, and so all its factors can pair up.


Why is 81 an composite number?

Because it has more than two factors and it is also a square number in which 9 times 9 = 81


What are the factors of 18 and 81?

The factors of 18 are 1,2,3,6,9, and 18. The factors of 81 are 1,3,9,27, and 81.


What factors go into 81?

The factors of 81 are 1, 3, 9, 27, and 81 .


What are the factors or 81?

The factors of 81 are 1, 3, 9, 27, and 81.


What are the prime factors factors of 81?

81 = 3x3x3x3


What are th factors for 81?

The factors of 81 are 1, 3, 9, 27, and 81.


Factors of 81?

The factors of 81 are: 1, 3, 9, 27, & 81


What are the factors and multiples of 81?

The multiples of 81 are infinite. The factors of 81 are: 1, 3, 9, 27, 81.


What are factors for 81?

The factors of 81 are: 1 3 9 27 81


What are the first five factors of 81?

The factors of 81 are 1, 3, 9, 27, and 81


How Many Factors Does 81 have?

81 has 5 factors: 1, 3, 9, 27, and 81.


What 2 square numbers make 106?

25 and 81


All Square roots of 81?

The square root of 81 is: ± 9


What are the common factors of 81?

The factors of 81 are 1, 3, 9, 27 and 81. For them to be common, they need to be compared to another set of factors.


What are the factors of 27 and 81?

The factors of 27 are 1, 3, 9, and 27. The factors of 81 are 1, 3, 9, 27, and 81.


What are the factors and prime factors 81?

The factors of 81 are: 1 3 9 27 81 The prime factor is: 3


Find all the factors of 81?

81 has these five factors: 1 3 9 27 81.


What are the two factors of 81 with a sum of 24?

81 does not have two factors like that. -81 has 27 and -3.


What are the first ten factors of 81?

81 only has five factors.


What are the factors of 90 and 81?

Factors of 90 are=3x3x5x2 Factors of 81=3x3x3x3


What are the factors of 100 and 81?

The factors of 81 are 1,3,9,27,81 The factors of 100 are 1,2,4,5,10,20,25,50,100


What are 81's common factors?

The factors of 81 are 1, 3, 9, 27, 81. For them to be common, they need to be compared to another set of factors.


What are all the common factors of 81?

The factors of 81 are 1, 3, 9, 27, 81. For them to be common, they need to be compared to another set of factors.


What are the factors for 81 and 27?

The factors of 27 are: 1, 3, 9, 27The factors of 81 are: 1, 3, 9, 27, 81