IBPS PO Prelims practice question
Simplify: (3.5 × 3.5 × 3.5 + 0.6 × 0.6 × 0.6) ÷ (3.5 × 3.5 − 3.5 × 0.6 + 0.6 × 0.6)
From a IBPS PO Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 4.1
Use a³ + b³ = (a + b)(a² − ab + b²). The denominator is exactly a² − ab + b², so it cancels and the value is a + b = 3.5 + 0.6 = 4.1.
हिंदी में प्रश्न
सरल कीजिए: (3.5 × 3.5 × 3.5 + 0.6 × 0.6 × 0.6) ÷ (3.5 × 3.5 − 3.5 × 0.6 + 0.6 × 0.6)
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सही उत्तर: (C) 4.1
a³ + b³ = (a + b)(a² − ab + b²) का प्रयोग करें। हर ठीक a² − ab + b² है, अतः वह कट जाता है और मान = a + b = 3.5 + 0.6 = 4.1।
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