What is the next number in this matchsticks series riddle?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

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?

Which five letter word can be added at the end of below word to form a
valid word?

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How many sides does a circle have?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

What does this below rebus puzzle mean?

Find the next number in the sequence

5 12 24 36 ?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Why did Navjot Singh Sidhu put the new January calendar in the freezer