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What approximate value should come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value) (27.01)3 + 9 × 729 + 729 = (?)3 - 27

What approximate value should come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value) (27.01)3 + 9 × 729 + 729 = (?)3 - 27 Correct Answer 30

(27.01)3 + 9 × 729 + 729 = (?)3 - 27

⇒ 273 + 3 × 3 × 272 + 3 × 32 × 27 = (?)3 - 27

⇒ 273 + 3 × 3 × 272 + 3 × 32 × 27 + 27 = (?)3

⇒ (27 + 3)3 = (?)3

∴ ? = 30

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