Select the related number from the given alternatives: 8 : 64 :: 27 : ?

Answer and explanation

Correct answer: C. 729

  1. Step 1: Notice that and .
  2. Step 2: The first pair maps : .
  3. Step 3: Following the square relation: .
Answer
729.
Why not the others: uses a linear factor; and represent unrelated cubes.

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