I have branches, but no fruit, trunk or leaves. What am I?

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

It belongs to you, but other people use it more than you do. What is it?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

A man dies of old age on his 25 birthday. How is this possible?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

Which is the correct shadow of the bird?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?