A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, the probability that it bears a perfect square number is:
Two coins are tossed simultaneously. The probability of getting at the most one head is:
A flag pole 18 m high casts a shadow 9.6 m long. What is the distance of the top of the pole from the far end of the shadow?
A bag contains 19 red balls, 37 blue balls and 27 green balls. If a ball is picked up from this bag a random, what is the probability of picking a blue ball?
A cylindrical tennis ball container can contain maximum three balls stacked on one another. The top and bottom balls also touch the lid and the base of the base of the container respectively. If the volume
of a tennis ball is 240 cm3, then what is the volume of the container?
Rajneetha walks around the circular park in 15 minutes. If she walks at the rate of 5 km/hr, how much distance would she have to travel, at the minimum, to reach the centre of the park from any point on its
Francis has 18 eggs out of which 12 eggs were sold at 10% loss than the cost price. At what mark up should be sell the remaining eggs to cover his losses?
If the length and height of a brick increases by 10% each respectively, and the breadth reduces by 20%, what is the percentage change in the volume of the brick?