What will you call your mother's brother's brother-in-law?

What is the fastest way to double your money?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Buy me, smell me or deliver me, I do not change.

Who am I?

Which is the smallest number that you can write using all the vowels exactly once?

I always drive my customer away.

Who am I?

What does the below rebus riddle means?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

Can you replace the question mark with the correct number?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?