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Which Ruby code snippet best illustrates dynamic typing?

easy📝 Syntax Q3 of 15
Ruby - Variables and Data Types
Which Ruby code snippet best illustrates dynamic typing?
Ax = 10 x = "hello" puts x
Bint x = 10 x = "hello" puts x
Cvar x: Integer = 10 x = "hello" puts x
Dx = 10 x = 20 puts x
Step-by-Step Solution
Solution:

  1. Step 1: Identify dynamic typing

    Dynamic typing allows variables to hold values of different types at different times.

  2. Step 2: Evaluate options

    x = 10 x = "hello" puts x assigns an integer then a string to the same variable, demonstrating dynamic typing. Options B and C use static typing syntax not valid in Ruby. x = 10 x = 20 puts x changes value but keeps the same type.

  3. Final Answer:

    x = 10\nx = "hello"\nputs x -> Option A

  4. Quick Check:

    Variable changes type from integer to string [OK]
Quick Trick: Dynamic typing allows variables to change types [OK]
Common Mistakes:
  • Confusing variable reassignment with type change
  • Using static typing syntax in Ruby
  • Assuming type must remain constant

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