Quantitative Aptitude - Arithmetic Ability Questions

The simplified value of 3-212-18 - 13 × 27 - 12 x 273 is closest to

If tanθ + cotθ = 5, then the value of tan2θ + cot2θ is

To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours. If it covers the same distance in 12 hours, what will be its speed?

A solid brass sphere of radius 2.1 dm is converted into a right circular cylindrical rod of length 7cm. The ratio of total surface areas of the rod to the sphere is

A shopkeeper marks the price of an article at Rs. 320. Find the cost price if after allowing a discount of 10%, he still gains 20% on the cost price.

The HCF of 24, 60 and 90 is:

Expanded and simplification of (x + 3)(x - 1) will be equal to

The radius of two circles is 3 cm and 4 cm. The distance between the centres of the circles is 10 cm. What is the ratio of the length of direct common tangent to the length of the transverse common tangent?