Quantitative Aptitude - Arithmetic Ability Questions

Find the least number which when divided by 12, 15, 18 and 27 leaves remainders 10, 13, 16 and 25 respectively.

Pipes A, B, and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hours, respectively, the third can drain the cistern, when filled, in 6 hours. If all the three pipes are opened simultaneously when the cistern is three-fifth full, how many hours will be needed to fill the cistern?

If 3 dozen guavas cost Rs. 90, how many guavas can be bought for Rs. 240?

In what ratio is the segment joining points (2, 3) and (-2, 1) divided by the Y-axis?

Find the fraction which bears the same ratio to 1/27 that 3/7 does to 5/9 .

If M = 0.1 + (0.1)2 + (0.01)2 and N = 0.3 + (0.03)2 + (0.003)2, then what is the value of M + N?

What is the simplest form of (1 + cosA)(cosecA ­ cotA)?

Five angles of a hexagon measure 116 deg each. What is the measure of the remaining angle?