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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
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.
Which is the only 3 digit no that is a perfect square and a perfect cube?
729
Is nine a perfect cube?
no it is not 4 is a perfect cube
Is 77 a cube number?
If by cube you mean perfect cube (a cube of an integer), then no, and the nearest perfect cube is 81.
Is 148 a perfect cube?
No, 148 is not a perfect cube.
Is 27 a perfect cube?
Yes because 3*3*3 = 27
Is 50 a perfect cube?
No it isn't a perfect cube since if you start with 3, (3*3*3=27) and go to 4, (4*4*4=64) there isn't a number that multiplies by itself 3 times to equal 50.
Which one of the numbers does not belong in the following series 3 7 8 15 30?
It could be any one of them: 3: A 1-digit perfect square - 1 which is not a perfect cube. 7: A perfect cube - 1 8: A 1-digit perfect square - 1 which is also a perfect cube. 15: A perfect 4th power - 1 30: More than 1 away from a perfect power.
Is 2 a perfect square and perfect cube?
No, 2 is neither a perfect square nor a perfect cube.
What is the Least number by which 30375 should be multiplied to get a perfect cube?
3
What is the smallest integer k such that 756k is a perfect cube?
k = 98. In the prime factorization (in power format) of a perfect cube, every prime must be to the power of a multiple of 3. 756 = 2^2 x 3^3 x 7 Thus the smallest perfect cube that is a multiple of 756 is 2^3 × 3^3 × 7^3; to obtain this need to multiply 756 by 2^1 × 3^0 × 7^2 = 98 Thus the smallest k to make 756k a perfect prime is k = 98.
