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A menu has (6) starters, (5) main dishes, and (4) desserts. A customer chooses exactly one item from at least two categories. How many selections are possible?एक मेन्यू में (6) स्टार्टर, (5) मुख्य व्यंजन और (4) मिठाइयाँ हैं। ग्राहक कम से कम दो श्रेणियों से ठीक एक-एक वस्तु चुनता है। कुल चयन कितने होंगे?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (154)(154)
Add selections from exactly two categories and all three categories. This gives ((6 \times 5)+(6 \times 4)+(5 \times 4)+(6 \times 5 \times 4)).दो श्रेणियों और तीनों श्रेणियों के चयन जोड़ें। ((6 \times 5)+(6 \times 4)+(5 \times 4)+(6 \times 5 \times 4)) मिलता है।
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