Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

1. How can we put an elephant in the refrigerator?
2. How can we put a Giraffe in a refrigerator?
3. The king of the jungle invites all the animals to a party everyone comes except for one animal, which animal?
4. You come to a crocodile-infested lake, you can't go around it, you can't co under it and you can't go over it, how do you get across?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

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?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

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

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?