What is the longest word in the dictionary?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

A tourist visits a small town for his research. While in the town, he decides to get a haircut. Since the town is quite small, there are only two barbers in the town � one on the North Street and one on the South Street. The barbershop on the North Street is a mess and the barber has a weird and pathetic haircut. While the barbershop at the South Street is pretty tidy and the barber as well has an impressive haircut.

Which barbershop will the tourist visit for his haircut and why?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What does the below image rebus riddle means ?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?