I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?

What has a ring but no finger?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

Using Only Five 5's and any mathematical operator make sum as 37

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Solve below rebus puzzle?

why number 8549176320 is one of a kind?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'