Brain Teasers
Missing Number
Group
These brain teasers rely on your ability to recognize groups of common attributes. For each of these puzzles you'll need to figure out why the words or letters are grouped as they are. Sometimes you will be asked to pick the odd-one-out or to place a new word into the correct group.Group
One number is missing from this finite set: 2-10-18-54-86.
What number is missing?
What number is missing?
Hint
Man of SteelAnswer
The missing number is 36.It is a list of the atomic numbers of the noble gases (from the periodic table):
Helium 2
Neon 10
Argon 18
Krypton 36
Xenon 54
Radon 86
Hide Hint Show Hint Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments
Argon is 18. Magnesiun is 12.
cool
stupid
Long live chemistry, god job!
To post a comment, please create an account and sign in.
Follow Braingle!