Nitin ranks eighteenth in a class of 49 students. What is his rank from the last?

Kailash remembers that his brother Deepak’s birthday falls after $20\mathrm{th}$ May but before $28\mathrm{th}$ May, while Geeta remembers that Deepak’s birthday falls before $22\mathrm{nd}$ May but after $12\mathrm{th}$ May on what date Deepak’s birthday falls?

Sangeeta remembers that her father’s birthday was certainly after the eighth but before the thirteenth of December. Her sister Natasha remembers that their father’s birthday was definitely after the ninth but before the fourteenth of December. On which date of December was their father’s birthday?

Standing on a platform, Amit told Sunita that Aligarh was more than 10 km but less than 15 km from there. Sunita knew that it was more than 12 km but less than 14 km from there. If both of them were correct which of the following could be the distance of Aligarh from the platform?

Ashish leaves his house at 20 minutes to seven in the morning, reaches Kunal’s house in 25 minutes, they finish their breakfast in another 15 minutes and leave for their office which takes another 35 minutes.  At what time do they leave Kunal’s house to reach their office?

Ajay left home for the bus stop $15$ minutes earlier than usual. It takes $10$ minutes to reach the stop. He reached the stop at $8.40$ a.m. What time does he usually leave home for the bus stop?