There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

There are three boxes which are labeled as Rs100, Rs150, and Rs200. One box contains two notes of Rs. 50. The second box contains one note of Rs50 and one note of Rs100 The third box contains two Rs. 100 notes. All boxes are labeled incorrectly.

What is the minimum number of boxes you must check in order to label all boxes correctly?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What word is pronounced the same if you take away four of its five letters?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

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