समानांतर श्रेढ़ी \(15,12,9,6,\ldots\) का (7)वाँ पद क्या है?
What is the (7)th term of the arithmetic progression \(15,12,9,6,\ldots\)?
Explanation opens after your attempt
A. (-3)
Concept
Here (a=15) and (d=-3), so (a_7=15+6(-3)=-3). In a decreasing progression, terms may go below zero.
Why this answer is correct
The correct answer is A. (-3). Here (a=15) and (d=-3), so (a_7=15+6(-3)=-3). In a decreasing progression, terms may go below zero.
Exam Tip
यहाँ (a=15) और (d=-3), इसलिए (a_7=15+6(-3)=-3)। घटती श्रेढ़ी में पद शून्य से नीचे भी जा सकते हैं।
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