Multiple choice

\text{What approximate value should come at place of questions mark (?) in the following questions?} \ \text{72.85 \times 87.13 - 33.09 \times 55.91 = ?}^2

  1. 62

  2. 67

  3. 71

  4. 83

  5. 58
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Calculate: 72.85 × 87.13 ≈ 73 × 87 = 6351; 33.09 × 55.91 ≈ 33 × 56 = 1848. Difference = 6351 - 1848 = 4503. Then √4503 ≈ 67 (since 67² = 4489). The claimed answer B (67) is correct as the closest approximation.

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