Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

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 am quite hot but become too cold if you remove the first two letters. What am I?

With the help clues provided in the image, can you find the 5 digit key?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

How can you drop a raw egg from a height onto a concrete floor without cracking it?