Quantitative Aptitude - Arithmetic Ability Questions

If one of the zeros of the quadratic polynomial (k - 1)x2 + kx + 1 is -3 then the value of k = ?

In the following question, select the odd letter/letters from the given alternatives.

If the angles of a triangle are in the ratio of 2 : 3 : 7, then find the ratio of the greatest angle to the smallest angle.

Consider two-digit numbers which remain the same when the digits interchange their positions. What is the average of such two-digit numbers?

A cone of height 12 cm and diameter 10 cm is mounted on a hemisphere of the same diameter. What is the volume of the solid thus formed?

A cylindrical vessel of radius 8 cm is partially filled with water. By how much will the water level rise if a sphere of radius 7 cm is completely immersed in this water?

U, V and W together can make a chair in 20 minutes. U and V together can make it in 25 minutes. How much time will (in minutes) W alone take to make the chair?

A line cuts the x­axis at the point (­3,0) and the y­axis at the point (0,6). What is the equation of the line?