Pls help i do not understand this at all !??

Every time you make a cut, you increase the number of logs by one because you are turning one piece of log into two pieces of logs. Since the number of logs increases by one each time you cut it, and you start out with one log, the number of logs will always be one more than the number of cuts.

20,48,52  and  7,24,25

Step-by-step explanation:

The following group of answer choices  are missing in the question:

20,48,52 4,5,6 7,24,25 9,12,16

The set of sides has to satisfy the equation: a² + b² = c²

For the first case: 20² + 48² = 52²

For the second case: 4² + 5² ≠ 6²

For the third case: 7² + 24² = 25²

For the fourth case: 9² + 12² ≠ 16²