The mother asked Neelu and her brother to pick stones form the wheat.Neelu picked 3/4th of the total stones in it and her brother also picked up 2/4th of the stones.How many stones both picked up together?

Mother asked Neelu and her brother to pick stones from the wheat.Neelu picked 1/4th of the total stones in it and her brother also picked up 1/4th of the stones.What fraction of the stones did both pick up together ?

Parveen wanted to make a temporary shelter for her car, by making a box-like structure with tarpaulin that covers all the four sides and the top of the car (with the front face as a flap which can be rolled up). Assuming that the stitching margins are very small, and therefore negligible, how much, tarpaulin would be required to make the shelter of height 2.5 m. with base dimensions 4 m x 3 m ?

Three machines E_1, E_2, E_3 in a certain factory produce 50%, 25% and 25% respectively of the total daily output of electric tubes. It is known that 4% of the tubes produced by each of machines E_1 and E_2 are defective, and that 5% of those produced on E_3 are defective. If one tube is picked up at random from a day's production, calculate the probability that it is defective.

In the fig., we see that it has 4 horizontal blocks (or paths) and 3 vertical blocks (or paths). This is known as 4 x 3 grid. Seema wishes to go from A to B but the instruction is that she must go only on the nght and only up, but not necessary in that order. How many possible paths does she have at her disposal ?