Sohan was putting covers on his note books.He put one fourth of the covers on Monday.He put another one fourth on Tuesday and the remaining on Wednesday.What fraction of the covers did he put on Wednesday?

Saima wants to put a lace on the edge of a circular table cover of diameter 1.5 m. Find the length of the lace required and also find its cost if one meter of the lace costs Rs. 15. (Take pi= 3.14)

An odd of stones lie along a straight path, the distance between any two consecutive stones being 10 m. The stones are to the collected at the place where the middle stone lies. A man can carry only one stone at a time. He starts carrying the stones beginning from the extreme stone. If he covers a path of 3 km, how many stones are there ?