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What is a three-digit number that is a perfect square and perfect cube?
729, cube of 9 and square of 27
What is a perfect cube number?
A perfect cube is the cube of an integer (whole number). This means that, for n to be a perfect cube, n = x3, x∈ℤ Eg. ±1 [=(±1)3], 8 [=(±2)3], ±27 [= (±3)3], etc.
What is the odd number out 16 36 64 27 81?
The only number in that list which is not a square number is 27. 27 is a cube number.
Is 16 a cube number?
Of a whole number? no. 2 x 2 x 2 = 8 3 x 3 x3 = 27
Is 27 a perfect cube?
Yes because 3*3*3 = 27
What is a rational number whose cube root is a whole number?
27 is a perfect cube.
What is a three-digit number that is a perfect square and perfect cube?
729, cube of 9 and square of 27
What is a perfect cube number?
A perfect cube is the cube of an integer (whole number). This means that, for n to be a perfect cube, n = x3, x∈ℤ Eg. ±1 [=(±1)3], 8 [=(±2)3], ±27 [= (±3)3], etc.
What is perfect square and perfect cube?
The square root of a perfect square and the cube root of a perfect cube is always an integer. A perfect square is a number multiplied by itself. A perfect cube is a number multiplied by itself twice. Example: 3 x 3 is 9, the square of 3 3 x 3 x 3 is 27, the cube of 3
Is the number 28 a cube number?
No 3 cubed is 27 4 cubed is 64 Strictly it is the cube of the cube root of 28. The common description is that it is not a perfect cube.
Is 30 a perfect cube?
No, 30 is not a perfect cube. A perfect cube is a number that can be expressed as the cube of an integer, such as (1^3 = 1), (2^3 = 8), or (3^3 = 27). The cube root of 30 is approximately 3.11, which is not an integer, confirming that 30 cannot be written as the cube of any whole number.
What is the odd number out 16 36 64 27 81?
The only number in that list which is not a square number is 27. 27 is a cube number.
Is 16 a cube number?
Of a whole number? no. 2 x 2 x 2 = 8 3 x 3 x3 = 27
Is 27 a perfect square?
No, it's a perfect cube.
What number between 1 and 999 is a perfect square and a perfect cube?
729 27 x 27 = 729 9 x 9 x 9 =729
What is a perfect square and perfect cubed number?
To find a number that is both a perfect square and a perfect cube, we must solve x2 = x3 over x ∈Z+. The only two solutions to this equation are 0 and 1, or x = {0,1}. Therefore, zero and one are the only two numbers that are both perfect squares and perfect cubes. --In easier terms: a perfect square is a number that can be "square rooted" and have no remainder. Like, 144. The square root is 12 therefore 144 is a perfect square. A perfect Cube is the same except that it must be "cubed rooted". Like 27. The cube root of this number is 3 therefore 27 is a perfect cube.
What numbers are perfect cubes?
any number multiplied by itself three times is a cube number eg. 3 x 3 x 3 =27 5 x 5 x 5 =125 so 27 is a cube number, so is 125 you can work out if something is a cube number by cube rooting it there is a cube root button on most scientific calculators
