The value of cos220° + cos270°is

Three sides of a triangle are 5 cm, 9 cm and x cm. The minimum integral value of x is

The orthocentre of a triangle lies on one of the sides. Then______

A dealer marks his goods 20% above their cost prices. Then,he allows such a discount on the marked price so that he makes a profit of 8%. The rate of discount is:

3 brothers divided Rs. 1620 among them in such a way that the share of second is equal to 5/13 of share of other two, combined. What is the share of the second one?

A merchant marked cloth at Rs. 50/metre . He offers 2 successive discounts of 15% and 20%. The net price/metre is

A rectangle with one side 4 cm is inscribed in a circle of radius 2.5 cm. The area of the rectangle in sq.cm is:

A can do a certain job in 12 days. B is 60% more efficient than A. Then B can do the same piece of work in