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 ?

Nazima is fly fishing in a stream. The tip of her fishing rod is 1.8 m above the surface of the water and the fly at the end of the string rests on the water 3.6 m away and 2.4 m from a point directly under the tip of the rod. Assuming that her string (from the tip of her rod to the fly) is taut, how much string does she have out ? If she pulls in the string at the rate of 5 cm per second, what will the horizontal distance of the fly from her after 12 seconds ? .