Quantitative Aptitude - Arithmetic Ability Questions

The ratio of two positive numbers is 3:4. The sum of their squares is 400. What is the sum of the numbers?

If the selling price is Rs 1680 after getting a discount of 16%, what was the marked price?

2sin[(C+D)/2].sin[(D­-C)/2] is equal to

If Sinx = 4/5, then Sec2x - 1 = ?

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 18% per annum is Rs 81. The sum is ____.

In the following question, select the odd word pair from the given alternatives.

199994 x 200006 = ?

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔABC is 98 cm sq, what is the area (in sq cm) of quadrilateral BDEC?