Multiple choice

what approximate value should come in place of question mark in the following questions? (You are not expected to calculate the exact value). निम्न लिखित प्रश्नो में प्रश्नचिन्ह के स्थान पर कौन सा अनुमानिए मान आना चाहिए। (आपको सटीक मान निकलने की आवश्यकता नहीं है ) 21.003 × 39.998 – 209.91 = 126 ×?

  1. 5

  2. 2

  3. 4

  4. 6

  5. 3
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Approximate: 21 × 40 = 840. 840 - 210 = 630. So 126 × ? = 630, which gives ? = 630/126 = 5. Let's verify with actual numbers: 21.003 × 39.998 ≈ 840 (since 21×40=840). 840 - 209.91 ≈ 630. 630/126 = 5. The answer is approximately 5.

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