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[" Sh.If abe are in A.P.then "|[x+1,x+2,...

[" Sh.If abe are in A.P.then "|[x+1,x+2,x+a],[x+2,x+3,x+b],[x+3,x+4,x+c],[x+3,x+4,x+c]|=quad [2013A,2018*]],[[(1),0,(B)-3],[(D)," none of these "," Ans."]]

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