एक A.P. में, दिया है : \( a=5, d=3, a_{n}=50, n \) और \( S_{n} \) ज्ञात कीजिए।
एक A.P. में,
दिया है : \( a=5, d=3, a_{n}=50, n \) और \( S_{n} \) ज्ञात कीजिए।
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