backward se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.
4 questions tagged with backward.
In an AP, \(a_{11}=40\) and \(a_{19}=72\). What is \(a_4\)?
C. (12)
\(d=\frac{72-40}{8}=4\) और \(a_4=40-7\times4=12\)। ज्ञात पद से पीछे जाने पर (d) घटाते जाएं। / \(d=\frac{72-40}{8}=4\) and \(a_4=40-7\times4=12\). When moving backward from a known term, subtract (d).
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If in an AP \(a_{16}=91\) and (d=6), what is \(a_3\)?
D. (19)
\(a_3=a_{16}-13d=91-78=13\)। पीछे जाते समय स्थानों के अंतर को (d) से गुणा करके घटाएं। / \(a_3=a_{16}-13d=91-78=13\). While moving backward, multiply the position gap by (d) and subtract.
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In an AP, \(a_{10}=31\) and \(a_{18}=55\). What is \(a_6\)?
B. (19)
\(d=\frac{55-31}{8}=3\), इसलिए \(a_6=31-4\times3=19\)। ज्ञात पद से पीछे आने पर (d) घटाएं। / \(d=\frac{55-31}{8}=3\), so \(a_6=31-4\times3=19\). When moving backward from a known term, subtract (d).
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If the (11)th term of an AP is (52) and (d=5), what is \(a_2\)?
A. (7)
\(a_2=a_{11}-9d=52-45=7\)। ज्ञात पद से पीछे आने पर स्थानों का अंतर गुणा करके घटाएं। / \(a_2=a_{11}-9d=52-45=7\). When moving backward from a known term, subtract the position gap times (d).
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