Quantitative Aptitude - Arithmetic Ability Questions

The value of 1/64 is equal to square of

If α + β = 90° and α:β = 2:1, then the ratio of cosα to cosβ is

In a company 2/3 of the workers are girls, 1/2 of the girls are married and 1/3 of the married girls live in hostel. If 3/4 of the boys are married and 2/3 of married boys live in hostel. Calculate the part of workers who don’t live in hostel.

If 'Q ' means ' +', 'J ' means ' X',T ' ' means '- ' and 'K ' means '÷ ', then what is the value of18K3Q7J ?

A product was sold foe Rs. 4,500 at a profit of 12.5%. What was the amount of profit?

A and B can together do a piece of work in 6 days and A alone can do it in 9 days. The number of days B will take to do it alone is

Wheat costing Rs 30/kg, Rs 35/kg and a third variety of wheat are mixed in the ratio of 3 : 4 : 2. If the mixture is costs Rs 34/kg, then what will be the cost (in Rs/kg) of the third variety of wheat?

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?