एक समान्तर श्रेणी में \(a_{10}=31\) और \(a_{18}=55\) है। \(a_6\) क्या होगा?

In an AP, \(a_{10}=31\) and \(a_{18}=55\). What is \(a_6\)?

Explanation opens after your attempt
Correct Answer

B. (19)

Step 1

Concept

\(d=\frac{55-31}{8}=3\), so \(a_6=31-4\times3=19\). When moving backward from a known term, subtract (d).

Step 2

Why this answer is correct

The correct answer is B. (19). \(d=\frac{55-31}{8}=3\), so \(a_6=31-4\times3=19\). When moving backward from a known term, subtract (d).

Step 3

Exam Tip

\(d=\frac{55-31}{8}=3\), इसलिए \(a_6=31-4\times3=19\)। ज्ञात पद से पीछे आने पर (d) घटाएं।

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Mathematics Answer, Explanation and Revision Hints

एक समान्तर श्रेणी में \(a_{10}=31\) और \(a_{18}=55\) है। \(a_6\) क्या होगा? / In an AP, \(a_{10}=31\) and \(a_{18}=55\). What is \(a_6\)?

Correct Answer: B. (19). Explanation: \(d=\frac{55-31}{8}=3\), 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).

Which concept should I revise for this Mathematics MCQ?

\(d=\frac{55-31}{8}=3\), so \(a_6=31-4\times3=19\). When moving backward from a known term, subtract (d).

What exam hint can help solve this Mathematics question?

\(d=\frac{55-31}{8}=3\), इसलिए \(a_6=31-4\times3=19\)। ज्ञात पद से पीछे आने पर (d) घटाएं।