176.     Whoever makes it,

              Tells it not.

             Whoever takes it,

              Knows it not.

              Whoever knows it,

               Wants it not.

177.    Mountains will crumble

             and temples will fall.

            No man can survive

            my endless call.

178.     On my own I'm 24th.

             Two of us and I'm 20.

             Three of us and I'm 18.

ANSWERS:

176.    Counterfeit money.

177.    Time.

178.    The letter X.  It's the 24th letter in the alphabet.  Two X's and it's the Roman numeral for 20.  Three X's represent adult material that can only be seen when you turn 18.

A/N Hey I was wondering if I should continue with these riddles.  Please let me know. Thanks for reading and commenting. :3