Quantitative Aptitude - Arithmetic Ability Questions

Square of (3x – 5xy) is

Shaan got a total of Rs. 912 in the denomination of equal numbers of Rs. 1, Rs. 5 and Rs. 10 coins. How many coins do Shaan posses?

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

The angle of elevation of the top of a tower from two horizontal points (in opposite sides) at distances of 25 meter and 64 meter from the base of tower are x and 90° - x respectively . The height of the tower will be

Δ DEF is right angled at E. If m ∠D = 30°. What is the length (in cm) of DE, if EF = 2√3 cm?

If a = √2 + 1 and b = √2 - 1, then the value of 1a+1+1b+1 will be

What is the rate of interest (in %) if simple interest earned on a certain sum for the 3rd year is Rs 2,000 and compound interest earned in 2 years is Rs 4,160?

A can do a work in 20 days and B in 10 days. If they work on it together for 5 days, then what fraction of work is left.