When can we add 2 to 11 and get 1 as the correct answer?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

Which wheel of car does not rotate when you turn your car right?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

A Detective reviewed the information they had on the case so far.

A lady named 'Caterina' was found shot and they already had a list of suspects - Ankit, Tarun, Harish, Manoj and Manish.
The killer is a fan of challenges him by leaving notes ad various places.
* The first was found in a toilet room.
* The second was found in an art room.
* The third was in a restroom.
* the fourth in an underwater room.
* The fifth at the no-smoking room.

All of the notes read the same thing, 'The clues are where you find the notes.' Yet, nothing was found at any place the notes were.
Detective the genius, immediately solved the case.
Who was the killer?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?