Quantitative Aptitude - Arithmetic Ability Questions

What are the co­-ordinates of the mid point of the segment joining points C(0,­-3) and D(8,5)?

If PA and PB are tangents to the circle with centre O such that ∠APB=50°, then the ∠OAB=

What is the least number that should be added to the product 11 x 12 x 13 x 14 to make it a perfect square?

A cone of radius 7 cm and height 12 cm is completely filled with water. This water is emptied into an empty cylindrical vessel of radius 3.5 cm. What will be the height of water in this vessel?

If 3x + 2 < 2x + 1 and x ­- 4 ≤ 2x -­ 1; then x can take which of the following values?

If x + 3 ≤ 4x + 4 and 5(4 -­ x) ­- 4 ≥ 5x - ­2; then

If x - 2y = 2 and 3x + y = 20, then the value of (x,y) is

Weight of A and B are in the ratio 11 : 8. A’s weight increases by 40% and the total weight of A and B increases by 30%. What is the percentage increase in the B’s weight?