Multiple choice

Find the approximate value of question marks (?) in the following given series. (139.93 × 24.102) - (27.89 × 7.53) = ?

  1. 2750

  2. 2920

  3. 3040

  4. 3150

  5. 3210
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Approximating: 139.93 ≈ 140, 24.102 ≈ 24, 27.89 ≈ 28, 7.53 ≈ 7.5. Then: (140 × 24) - (28 × 7.5) = 3360 - 210 = 3150. The closest option is D (3150). The calculation requires careful approximation and arithmetic to avoid errors. Options A, B, C, and E result from calculation errors or incorrect approximations.

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