Brain Teasers
Odd 1 Out
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
Group 1: 3,5,7,11,13, 15, 17
Group 2: 4,6,8,9,10,12,14
What is the "odd" one out in Group 1 that should be in Group 2?
Group 2: 4,6,8,9,10,12,14
What is the "odd" one out in Group 1 that should be in Group 2?
Hint
Prime and composite numbersPrime numbers- the only factors that make the number is only by 1 and itself. ex. 5*1=5
Composite- When two factors make the number besides 1 and itself
ex. 10
5*2=10
10*1=10
...and so forth
Answer
15 should be in Group 2 because it is a composite number.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
Found anothr one that I could manage with the help of your hints. Thanks for the help.
Hi nice and easy got it on the 2nd try!
thats an enourmous hint
couldn't you also put 9 in group A because it is the only odd number missing?
Very easy, but fun.
No you couldn't put 9 in Group 1 because Group 1 is a group of Prime Numbers, not odd numbers.
To post a comment, please create an account and sign in.
Follow Braingle!