[Solved] What will be the output of this Ruby code?def power(base, exponent = 2) base ** exponent end puts power(3) puts power(3, 4) | Ruby

Ruby - Methods

What will be the output of this Ruby code?

def power(base, exponent = 2)
  base ** exponent
end

puts power(3)
puts power(3, 4)

A3 4

B6 7

C9 81

DError due to missing argument

Step-by-Step Solution

Solution:

Step 1: Understand default parameter
The method power has a default exponent of 2.
Step 2: Evaluate power(3)
Since exponent is not provided, it defaults to 2, so 3 ** 2 = 9.
Step 3: Evaluate power(3, 4)
Exponent is provided as 4, so 3 ** 4 = 81.
Final Answer:
9 81 -> Option C
Quick Check:
Default exponent used when missing, explicit exponent otherwise [OK]

Quick Trick: Default exponent used if argument missing [OK]

Common Mistakes:

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