If A = [3 4; 5 2] and 2A + B is a null matrix, then B is equal to :

Question

MCQ (Single)Addition of MatricesCBSE PYQ

If x[1 2] + y[2 5] = [4 9], then :

In △ABC, AB = î + ĵ + 2k̂ and AC = 3î – ĵ + 4k̂. If D is mid-point of BC, then vector AD is equal to :