From her house Rimi went 20 km to the north. Then she turned west and covered 15 km. Then she turned south and covered 10 Km. Finally turning to east, she covered 15 km. In which direction is she from her house?
If '+' means 'divided by', '' means 'multiplied by', 'x' means 'minus' and ' ÷ ' means 'plus', which of the following will be the value of the expression:
Of the six members of a panel sitting in a row, A is to the right of C, but left of B. E is sitting left of C and right of D, who is sitting to the right of F. Find the members sitting at the two ends of the row.