What is always in front of you but can’t be seen?

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

why number 8549176320 is one of a kind?

In a kingdom, King George did not allow any citizen to visit the world outside. Also, only a person with proper paperwork was allowed to enter or he was sent back. A wooden bridge was what connected the kingdom to the world. The king had appointed a sharpshooter who would check the every five minutes on the bridge to check. After checking, he would go back to his hut and return exactly after five minutes again. The bridge took 9 minutes to cross.

A merchant was able to escape the kingdom without harming the shooter. How?

There is something which you can be arrested for attempting but not for successfully completing.

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Find the next number in the sequence

5 12 24 36 ?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1