A says if B gives me Rs 40, he will have half as much as C. But if C gives me Rs 40 then three of us will have the same amount. What is the total amount of money that A,B and C have among them?
One day, a person went to horse racing area, Instead of counting the number of human and horses, he instead counted 74 heads and 196 legs. Yet he knew the number of humans and horses there. How did he do it, and how many humans and horses are there?
A natural No n is chosen strictly between two consecutive perfect squares.The smaller of these two squares is obtained by subtracting k from n and the larger one is obtained by adding L to n.Prove that n-kL is a perfect square.
A person invested 3 times as much money at 5% as he had invested at 2% per annum simple interest. Further he invested Rs 6000 more at 3% than he had invested at 2%. If the total interest from the three investments after a year is Rs 980, then what is the total amount he invested?
Twenty-seven identical white cubes are assembled into a single cube, the outside of which is painted black. The cube is then disassembled and the smaller cubes thoroughly shuffled in a bag. A blindfolded man (who cannot feel the paint) reassembles the pieces into a cube. What is the probability that the outside of this cube is completely black?
In a 10 storey building 3 passenger enter a lift cabin.It is known that they will leave the lift at different storeys.In how many ways they can do so if the lift does not stop at the third storey.