What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Can you find out the missing number in the grid?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

You can see three almost identical images below. Can you spot the odd one out from them?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.