अनुक्रम \(42,36,30,24,\ldots\) के लिए recursive rule में क्या घटाया जाएगा?
For the sequence \(42,36,30,24,\ldots\), what is subtracted in the recursive rule?
Explanation opens after your attempt
C. 6
Simple Explanation
क्रमागत पदों का अंतर देखें: \(42-36=6\), \(36-30=6\) और \(30-24=6\)। अतः प्रत्येक नया पद पिछले पद में से 6 घटाकर मिलता है, यानी \(a_{n+1}=a_n-6\)। 5 घटाने पर अगला पद 37 होता, जो दिए गए अनुक्रम से मेल नहीं खाता। परीक्षा टिप: recursive rule बनाने से पहले दो लगातार पदों का अंतर अवश्य जाँचें। / Check the differences between consecutive terms: \(42-36=6\), \(36-30=6\), and \(30-24=6\). Thus, each new term is obtained by subtracting 6 from the preceding term: \(a_{n+1}=a_n-6\). If 5 were subtracted, the next term after 42 would be 37, which does not match the sequence. Exam tip: always compare two consecutive terms before writing a recursive rule.
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