Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Solve the rebus riddle in the picture below.

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?

Who are the happiest people in IPL match?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What do you think with the below Picture ?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

What work can one never finish?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?