A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Why is the Hole below a Lock?

You are on your way to visit your Friend, who lives at the end of the hill. It is his birthday, and you want to give him the cakes you have made. Between your house and his house, you have to cross 5 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake. How many cakes do you have to leave home to make sure that you arrive at a friend's house with exactly two

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

What four weights can be used to balance from 1 to 30 pounds?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What month of the year has 28 days?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

I am quite hot but become too cold if you remove the first two letters. What am I?