An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What is the end of everything?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Can you solve the rebus below?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?