What should come in place of the question mark ‘?’ in the following (You are not expected to calculate the exact value)

23.02 × 0.86 + 84.83 × 1.8 + 44.02 × 2.01 = ?

  1. 250
  2. 281
  3. 263
  4. 209

Answer (Detailed Solution Below)

Option 2 : 281
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Detailed Solution

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We know that any value between 0.1 and 0.4 becomes 0 after approximation. And any value between 0.5 and 0.9 becomes 1 after approximation.

Using the same approach we will solve given expression:

23.02 × 0.86 + 84.83 × 1.8 + 44.02 × 2.01 = ?

⇒ 23 × 1 + 85 × 2 + 44 × 2 = ?

⇒ 23 + 170 + 88 = ?

∴ ? = 281

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