13 cubes 4,9,16,25,36,46,64,81,100,121,144,169,196
Simply calculate the cubes of a few small numbers, and check which of them are in the desired range.
When it is of the form x3 + y3 or x3 - y3. x or y can have coefficients that are perfect cubes, or even ratios of perfect cubes eg x3 + (8/27)y3.
125,216,343,512
7 cubed is 343
13 cubes 4,9,16,25,36,46,64,81,100,121,144,169,196
There are a total of 5 positive three-digit perfect cubes that are even. To find this, we first determine the range of three-digit perfect cubes, which is from 46 to 96. Then, we identify the even perfect cubes within this range, which are 64, 216, 512, 729, and 1000.
Perfect cubes.
56 2,2,2,7 perfect cubes=1,8
Simply calculate the cubes of a few small numbers, and check which of them are in the desired range.
When it is of the form x3 + y3 or x3 - y3. x or y can have coefficients that are perfect cubes, or even ratios of perfect cubes eg x3 + (8/27)y3.
26
no
125,216,343,512
81
None at all, girlfriend! Besides, you look perfect the way you is!
100