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?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Replace the question mark in the picture below.

You see me once in June, twice in November, and not at all in May. What am I?

Can you identify the hidden rebus in the image below?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Find the missing number in the image below.

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?