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

O T T F F S S ?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

what does this below rebus represent identXQQQQQME

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Find the hidden tiger in the given optical illusion ?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

what's the probability of getting a king or a queen from a pack of 52 cards?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?