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

What does below pictogram mean?

If two's company, and three's a crowd, then whats four and five ?

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?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

I look at you, you look at me I raise my right, you raise your left. What am I?

Can you make four (4) nines (9) equal 100?

Replace the question mark with the number below given a simple math problem.

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.