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?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

People make me, save me, change me, raise me. What am I?

Take one out and scratch my head, I am now black but once was red. What am I?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

How many letters are in the alphabet?

Can you spot the man between the coffee bean in the picture below ?

Decode this picture on T-Shirt and tell what it says ?