To make the challenge especially stimulating for the brain, there’s a time limit; see if you can decipher all of the “odd ones out” in just 15 seconds. If you succeed, you can count yourself among the upper echelons of highly observant folk.

Ready, set, and go!

1/ Puzzle 1

2/ Puzzle 2

3/ Puzzle 3

4/ Puzzle 4

5/ Puzzle 5

6/ Puzzle 6

Good job! The solution awaits you below:

1/ Puzzle 1

2/ Puzzle 2

3/ Puzzle 3

4/ Puzzle 4

5/ Puzzle 5

6/ Puzzle 6

Were you able to do it without cheating?? See if your friends can. Challenge them to beat your score.