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

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

I add 5 to 9 and get 2. The answer is correct, so what am I?

Find the next number in the series.
1 10 24 43 67 ?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

What shoe company does this rebus represent?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.