The sequences you've provided seem to be patterns or sequences of numbers.
For the first sequence: 5, 55, 70, __, 100:
- The difference between 5 and 55 is 50.
- The difference between 55 and 70 is 15.
- The difference between 70 and the blank could be deduced if we find a pattern.
Since there may not be one clear answer based on just the provided numbers, let's try to find a number that fits reasonably. Following the trend of increasing numbers (the previous jumps seem somewhat irregular), we could tentatively place 85 in the blank:
So, it would be 5, 55, 70, 85, 100.
Now for the second sequence: 3, __, 42, 57, 60:
- The difference between 42 and 57 is 15.
- The difference between 57 and 60 is 3.
- The number before 42 is missing, let's try to analyze the pattern:
If we assume it's getting closer to 42, and the pattern is ascending and possibly irregular. Based on the earlier numbers and averages, let's say the number before 42 is 30.
Putting these together:
- 5, 55, 70, 85, 100
- 3, 30, 42, 57, 60
These are reasonable numbers to fit, although there could be many alternatives based on different interpretations of the series or underlying rules.