अनुक्रम \(4,9,14,19,\ldots\) का (n)वाँ पद कौन-सा है?
What is the (n)th term of the sequence \(4,9,14,19,\ldots\)?
Explanation opens after your attempt
A. (5n-1)
Concept
It has common difference (5), so (a_n=4+(n-1)5=5n-1). Use the first term and difference to form the rule.
Why this answer is correct
The correct answer is A. (5n-1). It has common difference (5), so (a_n=4+(n-1)5=5n-1). Use the first term and difference to form the rule.
Exam Tip
यह समान अंतर (5) वाली श्रेढ़ी है, इसलिए (a_n=4+(n-1)5=5n-1)। पहले पद और अंतर से नियम बनाएं।
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