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

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

Using Only Five 5's and any mathematical operator make sum as 37

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

Take away the whole and some still remain. What is it?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Can you find out the total number of triangles in the given figure?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111