दिए गए व्यंजक का मान दशमलव के दो स्थानों तक सही ज्ञात कीजिए।

0.05×0.05×0.05+0.04×0.04×0.040.05×0.050.05×0.04+0.04×0.04

  1. 0.19
  2. 0.09
  3. 0.90
  4. 0.85

Answer (Detailed Solution Below)

Option 2 : 0.09

Detailed Solution

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दिया गया है:

0.05×0.05×0.05+0.04×0.04×0.040.05×0.050.05×0.04+0.04×0.04

प्रयुक्त सूत्र:

a3 + b3 = (a + b)(a2 - ab + b2)

गणना:

0.05×0.05×0.05+0.04×0.04×0.040.05×0.050.05×0.04+0.04×0.04

(0.05)3+(0.04)3(0.05)20.05×0.04+(0.04)2

(0.05+0.04)((0.05)20.05×0.04+(0.04)2)(0.05)20.05×0.04+(0.04)2

(0.05 + 0.04)

⇒ 0.09

विकल्प 2 सही उत्तर है।

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