13 chairs and 5 tables were brought for 8280. If the average cost of the table will be 1227, what is the average cost of a chair?
Perimeter of a circle is equal to the perimeter of a square whose area is 484 cm². What is the radius of the circle?
Rohan lends 1000 in four parts. If he gets 8% interest on 2000, 7 1/2% on 4000 and 8 1/2%
on 1400 what percent of interest must he get for the remainder if his average annual interest is
8.13%?
(A) 10%
Tarun travels a distance of 24km at 6 km/hr another distance of 24km at 8 km/hr and a third distance of 24 km at 12 km/hr. His average speed for the whole journey (in km/hr) is
A box has 2 marbles each of red, blue yellow and green colours. The box is kept in a dark room where the colours of the marbles cannot be distinguished. A boy wants 2 marbles of the same colours. How many different marbles he must draw from the box so that he is sure that he has got 2 marbles of the same colour?
How many minimum number of different colours a painter must use to paint the figure below, so that no two adjacent regions have the same colour?