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      Question

      What approximate value will come in place of the question

      mark (?) in the following question? (Note: You are not expected to calculate the exact value.) (?² + √15.9) ÷ 4.98 = 12.89 X 3.97
      A 16 Correct Answer Incorrect Answer
      B 25 Correct Answer Incorrect Answer
      C 39 Correct Answer Incorrect Answer
      D 55 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      (?² + √15.9) ÷ 4.98 = 12.89 X 3.97

      (?² + √16) ÷ 5 ~ 13 X 4

      (?² + 4) ÷ 5 ~ 52

      ? ² + 4 ~ 260

      ? ² ~ 256

      ? ~ ±16

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