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Find the common difference of an A.P if \( t_{18}-t_{14}=3 L \).If \( 3+k, 18-k, 5 k+1 \) are in A.P, then find \( k \).If \( p \) and \( q \) are positive integers, then we write \( p=a^{2} b^{3} \) and \( q=a^{3} b \) if \( a \), \( b \) are numbers, then verify that L.C.M of \( (p, q) \times \) H.C.F of \( (p, q)=p q \). |
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Answer» t18=t1+17×d t14=t1 +13×d solving the two equtaions, t18-t14= 4d subtisting 4d=32 = d=8
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