अनुक्रम \(50,43,36,29,\ldots\) का (n)वाँ पद कौन-सा है?
What is the (n)th term of the sequence \(50,43,36,29,\ldots\)?
Explanation opens after your attempt
A. (57-7n)
Concept
The first term is (50) and the difference is (-7), so (a_n=50+(n-1)(-7)=57-7n). In a decreasing sequence, take the difference as negative.
Why this answer is correct
The correct answer is A. (57-7n). The first term is (50) and the difference is (-7), so (a_n=50+(n-1)(-7)=57-7n). In a decreasing sequence, take the difference as negative.
Exam Tip
पहला पद (50) और अंतर (-7) है, इसलिए (a_n=50+(n-1)(-7)=57-7n)। घटती श्रेढ़ी में अंतर को ऋणात्मक लें।
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