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      Question

      ?2 + (39.99 ├Ч 10.99 + 7.01) - (39.99 ├Ч

      2.992 + 21.99) = 21.99 ├Ч 23.01 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.)
      A 21 Correct Answer Incorrect Answer
      B 65 Correct Answer Incorrect Answer
      C 45 Correct Answer Incorrect Answer
      D 95 Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, ?2 + (39.99 ├Ч 10.99 + 7.01) - (39.99 ├Ч 2.992 + 21.99) = 21.99 ├Ч 23.01 ?2 + (40 ├Ч 11 + 7) - (40 ├Ч 32 + 22) = 22 ├Ч 23 ?2 + (440 + 7) - (360 + 22) = 22 ├Ч 23 ?2 + 447 - 382 ~ 22 ├Ч 23 ?2 + 65 ~ 506 ?2 ~ 441 ? ~ 21

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