You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

What does it mean?

Which tank will fill first?

Count the number of balls in picture below:

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

What word begins and ends with an E, but has only one letter?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

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

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