Rajasthan Police Constable Model Paper 5

Pattern is as follows:
Third Row → First Row ÷ Second Row – Second Row.
$1^{\mathit{s}\mathit{t}}$ column → 30 ÷ 5 - 5 = 1.
$2^{\mathit{n}\mathit{d}}$ column → 20 ÷ 4 - 4 = 1.
$3^{\mathit{r}\mathit{d}}$ column → 27 ÷ 3 - 3 = 6.
Thus right answer will be 3.