Given two variables a and b, which Ruby expression returns true only if a is less than b and both are not equal?

hard📝 Application Q9 of 15

Ruby - Operators and Expressions

Given two variables a and b, which Ruby expression returns true only if a is less than b and both are not equal?

Aa < b

Ba <= b

Ca > b

Da == b

Step-by-Step Solution

Solution:

Step 1: Analyze the meaning of a < b
The operator '<' means strictly less than, so a < b is true only if a is less than b and not equal.
Step 2: Eliminate incorrect options
a <= b ('a <= b') returns true when a equals b. a > b ('a > b') checks greater than, wrong direction. a == b checks equality, which is false for less than.
Final Answer:
a < b -> Option A
Quick Check:
'<' means less than and not equal [OK]

Quick Trick: '<' means strictly less than, no need for extra checks [OK]

Common Mistakes:

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