If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

How many times in a given day, minutes and hour clock comes in a straight line ?

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?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

Can you name four days which start with the letter 'T'?

What's the only room from which no one can enter or leave

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

Find out which of the given views in the picture is accurately the top view of the given pyramid.