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1. This check should accept only whole numbers from 1 to 10. What is the bug? ``

python
x = 50
if x >= 1 or x <= 10:
    print("in range")

``

It uses <= where < is needed for the lower limitIt uses or where and is needed, so every whole number passesIt needs parentheses around each comparisonIt should compare with == instead of >=

2. Why does this loop crash? ``

python
items = [10, 20, 30]
for i in range(len(items) + 1):
    if 0 <= i <= len(items):
        print(items[i])

``

The loop should start at 1 instead of 0The list has length 4 in PythonThe check i <= len(items) lets 3 through, and items[3] does not existThe check should use or instead of and

3. What does this program print? ``

python
a = 1
b = 10
print(1 <= a < 10, 1 <= b < 10)

``

True TrueTrue FalseFalse FalseFalse True

4. What does this program print? ``

python
import math

nan = math.nan
print(0.0 <= nan <= 1.0, not (0.0 <= nan <= 1.0))

``

True FalseFalse FalseTrue TrueFalse True

5. The function in_range(x, low, high) returns x >= low and x <= high. Does in_range(5, 10, 1) return True?

True, because 5 lies between 10 and 1True, because the function swaps the limits when low is largerFalse, because 5 >= 10 is false, so the and failsFalse, because a function cannot take a limit that is larger than x

Ranges