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[" Let "a_(1),a_(2),.........a_(00)" be an "A.P_(-),S=sum_(i=1)^(n)a_(i)" and "],[T=sum_(i=1)^(15)a_(13-1)," If "a_(5)=27" and "S-2T=75," then "],[a_(10)" is equal to : "],[[" (1) "57,(2)+7," (3) "42," (4) "52]]

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