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[" (C) "3," (D) "4],[" 12.If "a,b,c" are...

[" (C) "3," (D) "4],[" 12.If "a,b,c" are in "" A.P.,then "7^(a),,7^(b)" and "7^(c)" are in "],[[" (A) A.P."," (B) G.P."],[" (C) H.P."," (D) None of these "]]

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