Quantitative Aptitude - Arithmetic Ability Questions

­ A wooden bowl is in shape of a hollow hemisphere of internal radius 8 cm and thickness 1 cm. Find the total surface area of the bowl?

20% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

If 1/√(1+tan2A) = x, then value of x is

The price of an article is discounted by 25%, to restore to its original value, the new price must be increased by

Reflection of the point (­2,5) in the x­ axis is

If a + b = 9 and a2+ b2= 61, then ab is

3 hrs after a goods train passed a station, another train travelling at a speed of 88 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 8 hours. What is the speed of the goods train?

If cos 240° = x, then value of x is