What does this rebus means ?

PROG WORKRESS

What is the word or phrase?

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT

There is a place where if I stand up straight, I will still be considered sideways.

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

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

If all the below statements are true

1. Gianni was either in Italy or France in 1997.
2. If Gianni did not kill Versace, Hilton must have killed him.
3. If Versace died of suffocation, then either Gianni killed him or Versace committed suicide.
4. If Gianni was in Italy in 1997, then Gianni did not kill Versace.
5. Versace died of suffocation, but he did not kill himself.

Who killed Versace and where was Gianni in 1997?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

A Monkey, a squirrel, and an Eagle are racing to the top of the mango tree. Assuming all these animals are in perfect shape, Which animal will reach to Banana first?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?