I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Can you start the fire using two pieces of wood?

What number when divided in half becomes zero?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

Find the next number in the sequence

5 12 24 36 ?

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

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.