What is so fragile that saying its name breaks it?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

What has a ring but no finger?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

What part of the chicken has the most feathers?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What is next number in the pattern below:

131 517 192 123 ?