Are you able to see which number is missing in this sequence right away? Get your mind going with this awesome collection of brain teasers. They will increase your mental focus – it’s the perfect break in between work or your daily chores.

Not many people are able to pass this test in less than 20 sec. But don’t worry! If you get stuck, scroll down to check out the answer. Are you up for the challenge?
Yes, exactly! The missing number is 39.

QUIZ 2: Let’ s try again

Yes, that’s right. The 4 is missing! Did you get all the quizzes right without taking a look at the solution? How long did it take you? Challenge your friends as well and pass this mental focus test on to them.