Why do you find that most of the buildings are deprived of the 13th floor?

Which English verb becomes past tense just by rearranging the letters?

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?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

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

In which direction should the missing arrow point?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

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