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

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Can you find the company name in the pictogram below?

Why is Saturday stronger than Monday?

What jumps when it walks and sits when it stands?

What type of tree can I carry in my hand?

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

What does Alexander the Great and Winnie the Pooh have in common?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.