Buy me, smell me or deliver me, I do not change.

Who am I?

What is the difference between a jeweller and a jailer?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

Imagine you are in a room with no windows or doors. How will you get out?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

Can you find out which number multiplied by itself will give the output as 12345678987654321?