It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

It belongs to you, but other people use it more than you do. What is it?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

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?

How many letters are in the alphabet?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?

why number 8549176320 is one of a kind?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?