Jaikishan and Premkishan Solutions for Exercise 1: Let us Practice

The angle between the hour hand and the minute hand of a clock when time is $3: 25$ will be:  

The minute hand of a clock overtakes the hour hand at intervals of $63$ minutes of the correct time. How much does a clock gain or lose in a day?

Which year next to $1990$ will have the same calendar as that of the year $1990?$

I was born on ${11}^{th}$ August. Mohan is older than me by $11$ days. This year's Independence Day falls on a Monday. The day on which Mohan's birthday will fall this year will be?

Mrs. Susheela celebrated her wedding anniversary on Tuesday, ${30}^{th}$ September $1997$. When will she celebrate her next wedding anniversary on the same day?

If the Republic Day of India in $1980$ falls on Saturday, X was born on $3^{rd}$March $1980$ and Y is $4$ days older to X, then Y's birthday will fall on which day?

Nasir's birthday is on Thursday, ${18}^{th}$ May. On what day of the week will be Rehan’s birthday in the same year if Rehan was born on ${19}^{th}$ August?

The birthday of Y was celebrated $6$ days before X, who was born on $4^{th}$ October$1999$. The Independence Day of that year fell on Sunday. On which day did Y celebrate her birthday, if it was not a leap year?