The pattern followed is that in each row, the numbers are of the form : $$x,4x,8x$$
Eg : $$3,(4\times3),(8\times3)=3,12,24$$
and $$4,(4\times4),(8\times4)=4,16,32$$
Similarly, $$5,(4\times5),(8\times5)=4,20,40$$
Thus, missing term =Â 40
=> Ans - (C)
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