If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

What is the word or phrase?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What happened when the wheel was invented?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

Can you solve the below tricky visual equation?

What is the largest number you can write with just 3 digits?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?