In a row of boys,Deepak is seventh from the left and Madhu is twelfth from the right. If they interchange their positions,Deepak becomes twenty-second from the left. How many boys are there in the row?

If $18^{th}$ February,$1997$ falls on Tuesday,then what will be the day on $18^{th}$ February,$1999$?

Five men $A, B, C, D$ and $E$ read a newspaper. The one who reads first gives it to $C$. The one who reads last had taken it from $A$. $E$ was not the first or the last to read. There were two readers between $B$ and $A$. To whom did $B$ pass the newspaper?

Geeta is taller than Seeta but not shorter than Radha. Radha and Rani are of the same height. Geeta is shorter than Paru. Amongst all the girls,who is the tallest?

Hemang is $16^{th}$ from the top and $12^{th}$ from the bottom in merit in the class. How many students are there in the class?

If the day before yesterday was Saturday,what day will fall on the day after tomorrow?