Quantitative Aptitude - Arithmetic Ability Questions

The value of cos220°+cos270° is

x and y are two numbers such that their mean proportion is 8 and third proportion is 512. What is the value of x and y?

If the successive discounts be 20% , 10% and 5% , then the single equivalent rate of discount is

By what fraction selling price (S.P.) must be multiplied to get the cost price (C.P.) if the loss is 20% ?

Mahesh buys 3 shirts at an average price of Rs 1250. If he buys 2 more shirts at an average price of Rs 1450 what will be the average price (in Rs) of all the 5 shirts he buys?

Each member of a club contributes as much rupees and as much paise as the number of members of the club. If the total contribution is Rs. 2525, then the number of members of the club is

In the fig. ∆ABC is inscribed in a circle with centre O. If ∠ABC = 30° then ∠ACB is equal to

In a triangle XYZ , which of the following conditions is true