Which of the following is the correct syntax to use reject on an array nums to remove even numbers?

easy📝 Syntax Q12 of 15

Ruby - Enumerable and Collection Processing

Which of the following is the correct syntax to use reject on an array nums to remove even numbers?

Anums.reject { |n| n % 2 == 0 }

Bnums.reject(n % 2 == 0)

Cnums.reject => n { n % 2 == 0 }

Dnums.reject do n; n % 2 == 0 end

Step-by-Step Solution

Solution:

Step 1: Identify correct block syntax for reject
The reject method requires a block with { |var| condition } or do |var| ... end.
Step 2: Check each option's syntax
nums.reject { |n| n % 2 == 0 } uses correct block syntax with braces and block variable. nums.reject(n % 2 == 0) misses block. nums.reject => n { n % 2 == 0 } uses invalid syntax. nums.reject do n; n % 2 == 0 end misses block variable in do syntax.
Final Answer:
nums.reject { |n| n % 2 == 0 } -> Option A
Quick Check:
Correct block syntax with |var| = D [OK]

Quick Trick: Use braces with |var| for reject blocks [OK]

Common Mistakes:

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