Number reasoning: 0,7 / 8,26 / 27, ()

Number reasoning: 0,7 / 8,26 / 27, ()

The answer is 63 / 64
Write the first term 0 as 0 / 1. The denominator is the cube of 1, the cube of 2, the cube of 3 and the cube of 4. The molecule is 1 less than the denominator