I can write cow in 13 letters.

Can You?

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

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Why is a river so rich ?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

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 begins with T, ends with T, and has T in it?

Can you solve this picture maths equation?