I can't find any answer The options are:
(B) 16.



closed as off-topic by hexomino, greenturtle3141, Jaap Scherphuis, boboquack, Arnaud Mortier Aug 4 at 14:10

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  • 4
    $\begingroup$ Where did you find this puzzle from? Here at Puzzling Stack Exchange, uncredited puzzles will unfortunately result in the question being closed, as if it goes unsourced, it technically counts as plagiarism. $\endgroup$ – Rewan Demontay Aug 4 at 4:24

I think it is

B (16)


Every line goes the first number / 2 + 2nd number * 2 = third number. Which means the last line is 12/2+5*2=16 (B)


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