Richard is fifteenth from the front in a column of boys. There were thrice as many behind him as there were in front. How many boys are there between Richard and the seventh boy from the end of the column?
A voluntary organization planted a total of 106 trees along the road side. Some of the trees were fruit bearing trees.If the number of non-fruit bearing trees was two more than thrice the number of fruit bearing/trees, what was the number of fruit bearing tress planted?
A started from a place. After walking for a kilometer, in a direction, he turns to the left, then walking for a half kilometer, he again turns to the left. Now he is going eastwards. In what direction did he originally started?