समान्तर श्रेणी में \(a_{18}=111\) और \(a_{42}=351\) है। कौन-सा पद (531) होगा?
In an AP \(a_{18}=111\) and \(a_{42}=351\). Which term will be (531)?
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Correct Answer
B. (60)वां/(60)th
Explanation
Simple Explanation
\(d=\frac{351-111}{42-18}=10\)। (531=111+(n-18)10) से (n=60)। / \(d=\frac{351-111}{42-18}=10\). From (531=111+(n-18)10), (n=60).
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समान्तर श्रेणी में \(a_{18}=111\) और \(a_{42}=351\) है। कौन-सा पद (531) होगा? / In an AP \(a_{18}=111\) and \(a_{42}=351\). Which term will be (531)?
Correct Answer: B. (60)वां / (60)th. Explanation: \(d=\frac{351-111}{42-18}=10\)। (531=111+(n-18)10) से (n=60)। / \(d=\frac{351-111}{42-18}=10\). From (531=111+(n-18)10), (n=60).
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