अनुक्रम \(20,15,10,5,\ldots\) के लिए सही recursive rule कौन सा है?
Which recursive rule is correct for the sequence \(20,15,10,5,\ldots\)?
Explanation opens after your attempt
C. \(a_1=20, a_{n+1}=a_n-5\)
Concept
The first term is (20), and (5) is subtracted each time. Exam tip: watch (+) and (-) in decreasing sequences.
Why this answer is correct
The correct answer is C. \(a_1=20, a_{n+1}=a_n-5\). The first term is (20), and (5) is subtracted each time. Exam tip: watch (+) and (-) in decreasing sequences.
Exam Tip
पहला पद (20) है और हर बार (5) घटता है। घटते अनुक्रम में (+) और (-) का ध्यान रखें।
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