state gov Allahabad High Court Stenographer 2024 Mock Test Series Quantitative Aptitude Geometry Co-ordinate Geometry
If the line joining the points A(2a, 3b) and B(c, 2d) subtends a right angle at the origin, then
1
ac - 2bd = 0
2
3ab - cd = 0
3
ab + cd = 0
4
ac + 3bd = 0