What brings you down but never up?

Which tank will fill first?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

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

How Come ??

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Can you spot the hidden girl in the picture below?