Quantitative Aptitude - Arithmetic Ability Questions

What is the value of sin (630 + A) + cos A?

20% of 120?

Ticket for an adult is Rs 1600 and a child is Rs 1200. 1 child goes free with two adults. If a group has 23 adults and 10 children what is the discount the group gets?

If 1 shirt is offered free on purchase of 4 shirts, what is the effective discount (in %) on each shirt?

By selling a used phone for Rs.7260 Sanjan got 34% less than what it cost him to buy it a few years ago.At what price should Sanjan have sold the phone to gain a profit of 5%?

A trader allowed a discount of 15% on a trolley bag having list price of Rs 1360 and earns a profit of 15.6%. What is the cost price (in Rs) of the trolley bag?

In the circle above, chord AB is extended to meet the tangent DE at D. If AB = 12 cm and DE = 8 cm, find the length of BD.

If a=101 then the value of a(a2-3a+3) is