I am an odd number. Take away a letter and I become even. What number am I?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Can you find the company name in the pictogram below?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

What is the riddle which can be asked all day with a different correct answer each time.

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

Our product and our sum always give the same answer. Who are we?