When can we add 2 to 11 and get 1 as the correct answer?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

Do you know who was buried in John's tomb?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

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?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.