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?

If eleven plus two equals one, what does nine plus five equal?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Spot what is wrong here in below Picture?

My location can be determined by the below rebus.
So where am i ?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

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 ?

What four weights can be used to balance from 1 to 30 pounds?

Which letter of the alphabet has the most water?

Find the next number in the sequence

1, 2, 6, 21, 88, __?