Nine boys have to stand in a circle. In how many ways they are to be stand on the circumference of circle?
Any boy may be stand on any place so there is no difference in clockwise and anticlockwise direction here. Requirement permutations = 1/2 × (n - 1)! => 1/2 × (9 - 1)! => 1/2 × 8! => 20160
A rectangular reservoir is 60 meters long and 40 meters deep. If 1500 cubic meters of water is drawn off, the water level in the reservoir drops by 1.5 ...
A hemispherical bowl with an internal radius of 15 cm is full of liquid. This liquid will be filled in cylindrical bottles with a radius of 5 cm and a h...
The area of a square is 38 sq. cm more than the area of a rectangle of length 19 cm and breadth 17 cm. What will be the area of incircle of the square?
The volume and height of a cylinder are 7436 cm3 and 14 cm. Find the radius of the cylinder.
A pipe fills a cubical tank at the rate of 196 m3 per minute in 14 minutes. If a cylindrical tank having height same as the side of a cubical...
The volume of a conical tent is 1232m3 and the area of its base is 154m2. Find the width of the canvas required to build the tent....
The length of a rectangle is four times its breadth. If its length is increased by 20 cm and breadth is increased by 20 cm, the area of the rectangle is...
The monthly salary of a person was Rs 50,000. He used to spend on three heads- personal and family expenses (E), taxes (T), philanthropy (P), and rest ...
If the area of square is 225 cmsup2; and the breadth of rectangle is 20% more and the length is 30% more than the side of the square, then find the the ...
The breadth of a rectangle is increased by 10 cm, it will become twice the length of the rectangle. If the new perimeter is 336 cm, then find the origin...
