Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

Name a key which is hardest to turn.

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What has one eye, but can’t see?

A monk has a very specific ritual for climbing up the steps to the temple. First, he climbs up to the middle step and meditates for 1 minute. Then he climbs up 8 steps and faces east until he hears a bird singing. Then he walks down 12 steps and picks up a pebble. He takes one step up and tosses the pebble over his left shoulder. Now, he walks up the remaining steps three at a time which only takes him 9 paces. How many steps are there?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?