Logical operators (&&, ||, !) in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if both conditions are true using the AND operator.

Ruby

if a [1] b
  puts "Both are true"
end

Drag options to blanks, or click blank then click option'

A||

B&&

C!

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using || which means OR instead of AND.

Using ! which means NOT and changes the meaning.

The AND operator in Ruby is &&. It returns true only if both sides are true.

2fill in blank

medium

Complete the code to check if either condition is true using the OR operator.

Ruby

if x [1] y
  puts "At least one is true"
end

Drag options to blanks, or click blank then click option'

A&&

B==

C!

D||

Attempts:

3 left

💡 Hint

Common Mistakes

Using && which means AND instead of OR.

Using == which checks equality, not logical OR.

The OR operator in Ruby is ||. It returns true if at least one side is true.

3fill in blank

hard

Fix the error in the code by completing the NOT operator usage.

Ruby

if [1] is_valid
  puts "Invalid input"
end

Drag options to blanks, or click blank then click option'

A!

B||

C&&

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using && or || which are AND/OR, not NOT.

Using == which checks equality, not negation.

The NOT operator in Ruby is !. It reverses the truth value of the expression.

4fill in blank

hard

Fill both blanks to create a condition that checks if a is true AND b is false.

Ruby

if a [1] [2]b
  puts "Condition met"
end

Drag options to blanks, or click blank then click option'

A&&

B||

C!

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using || instead of && for AND.

Not negating b when needed.

Use && to check both conditions and ! to negate b.

5fill in blank

hard

Fill all three blanks to create a condition that checks if x is true OR y is false AND z is true.

Ruby

if x [1] [2]y [3] z
  puts "Complex condition met"
end

Drag options to blanks, or click blank then click option'

A&&

B!

C||

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up AND and OR operators.

Forgetting to negate y.

Use || for OR, ! to negate y, and && for AND.