In how many ways Barcelona’s football team captain and vice-captain be elected from a team of 15 men?
To do this, if captain is selected first, then we have 15 ways of doing this. For election of vice-captain, we have 14 ways left, because 1 way is already consumed. So, the required answer = 14 × 15 = 210
If the ratio of areas of two circle is 4:25, then the ratio of their circumferences will be:
If base of a prism is square of side 5 cm & height is 30 cm . What is the volume of prism?
The side of a square is increased by 40%. Find the percentage change in its area?
A right circular cylinder having total surface area of 2833.6 cm2 is immersed in a vessel completely filled with water. If the height of the ...
A race track is in the shape of a rectangle with length of 13 metres and area of 1300 m2. A car takes 10 seconds to make one lap around the p...
The area of a rectangle is 5/7 that of a square. The length of the rectangle is 20 cm and the breadth of the rectangle is 3/2 times that of the side of ...
Mohini's Biology test had 250 questions i.e. 20 Macromolecules, 60 Homeostasis and 70 Immunology questions. Although she answered 70% of the Macromolecu...
A cone is parallel to its base in such a way that the volume of the smaller cone is 1/2197 times of the bigger cone. Find the height of the smaller co...
The circumference of the two circles is 198 cm and 352 cm respectively. What is the difference between their radii?
The area of a rhombus is 168 cm2. The length of one of its diagonals is 28 cm. The length of the other diagonal is:
