I am quite hot but become too cold if you remove the first two letters. What am I?

What is the next shape from answers A, B, C, and D figure?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Prove that twice of ten is the same as twice of eleven.

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

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.

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?