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

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

I can write cow in 13 letters.

Can You?

Name a key which is hardest to turn.

Find the number of squares in the below-given picture.

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

What is 3/7 chicken, 2/3 cat and 2/4 goat?

I travel all around the world but always stay in the corner. What am I?