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    				| 1. | सर्वसमिकाओं का प्रयोग कर गुणनफल ज्ञात कीजिए।85 × 96 | 
| Answer» 85 × 96 = (100 – 15) × (100 – 4) = (100)2 + (-15 – 4) × 100 + 15 × 4 = 10000 – 1900 + 60 = 8160 | |