Multiple choice

$(\text{What approximate value will come in place of the question mark(?) in following equation?})$ $((10.998)^2 + (16.221)^2 – (14.441)^2 =?)$

  1. $180$
  2. $220$
  3. $130$
  4. $240$
  5. $165$
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A Correct answer
Explanation

Approximating: (10.998)² ≈ 11² = 121, (16.221)² ≈ 16² = 256, (14.441)² ≈ 14² = 196. So 121 + 256 - 196 = 181. The closest approximation is 180. This tests ability to round decimals to nearest integers and compute quickly.

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