Q: If A = [ −1 2 3 −2; 2 −5 1 2; 3 −8 5 2; 5 −12 −1 6 ] then the rank of the matrix A is
(a)2
(b)5
(c)4
(d)3
Correct Answer: (a)
The correct answer is (c) '4'. This question from the Defence & Security domain tests knowledge of Ranks & Gallantry Awards.