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The value of (S_n-S_{n-2}+S_{n-6}-S_{n-8}) is (312). What is (n)?(S_n-S_{n-2}+S_{n-6}-S_{n-8}) का मान (312) है। (n) कितना है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (80)(80)
The expression is ((n-1)+n+(n-7)+(n-6)=4n-14), and (4n-14=312) gives no integer (n). Convert into terms and check parity first.व्यंजक ((n-1)+n+(n-7)+(n-6)=4n-14) है और (4n-14=312) से पूर्णांक (n) नहीं मिलता। पहले पदों में बदलकर समता जांचें।
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