What does the below rebus riddle means?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

What is so fragile that saying its name breaks it?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Forwards I am heavy, backward I am not. What am I?

I can write cow in 13 letters.

Can You?

A fresher was sitting in an interview. The interviewer said, "This is the last question of your interview. Tell me the accurate position of the centre of this table where your resume is kept."

How can he answer this question? What will you have answered to such a question?

How many triangles are there in the picture below?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C