Strictly increasing
Input
is_strictly_increasing(1, 2, 3)
Output
True
1 < 2 < 3 is True, so the function returns True.
Full lesson preview
Evaluate Boolean Expressions
Use comparison and boolean operators to determine if three values are strictly increasing.
Python practice17 minVariables & Data TypesIntermediateLast updated January 2, 2026
Problem statement
Given three numbers a, b, and c, return True if they are strictly increasing (a < b < c), otherwise return False. Use Python comparison chaining and boolean evaluation rather than multiple separate comparisons if possible.
This helps practice comparisons, boolean results, and returning boolean values directly.
Task
Implement a function that evaluates a chained comparison (a < b < c) and returns the boolean result.
Examples
Input format
Three numeric values a, b, c are passed as arguments to is_strictly_increasing.
Output format
Return a boolean: True if a < b < c, otherwise False.
Constraints
- Inputs can be integers or floats.
- Use Python's comparison behavior; equal adjacent values should result in False.
Samples
Sample 1
Input
is_strictly_increasing(2, 2, 3)
Output
False
Because 2 is not less than 2, the chained comparison fails.