The Mad Math Dash

Today's Brain Game Tuesday Test Time is a tough one which asks you to identify the best number to continue a sequence. Are you up for the challenge?

89, 115, 22, 6, 737, 440, ___, ...

Which of the following numbers best
continues the above sequence, and why?

a. 18
b. 1252
c. 506
d. 3

Here is our SOLUTION. 

89, 115, 22, 6, 737, 440, ___, ...

Which of the following numbers best
continues the above series, and why?

a. 18
b. 1252
c. 506
d. 3


b. 1,252.

When spelled out, every other number uses a hyphen:

     one hundred fifteen
seven hundred thirty-seven
     four hundred forty

one thousand two hundred fifty-two

Did you come up with an alternate answer? Feel free to share it (along with your explanation) in the comments below. Thanks for playing!

Pop Quiz: See How Well Your Brain Handles the Stroop Test

Our brains are amazing organs. They’re capable of solving highly complex problems and achieving incredible feats. But the brain isn’t perfect. Despite its many strengths, it doesn’t take much to completely confuse it. Case in point: The Stroop effect.

The Stroop effect—named after John Ridley Stroop, who first wrote about it in a psychology paper—illustrates what happens when the brain is trying to process conflicting streams of information. Specifically, the test that produces the effect involves naming the color a word is printed in when the word itself is the name of a different color. (Example: seeing the word “red” in a blue font and saying “blue.") Reading words is easy, naming colors on their own is a bit harder—and when those two things conflict, the brain is sent into a bit of a tizzy.

You can watch the folks over at Science World in British Columbia above as they take the Stroop test, and play along to test your own mental flexibility. Be prepared to feel flustered.

For more about the Stroop effect, head over to Science World’s website.

Banner image via YouTube.

[h/t The Kid Should See This]

Start Me Up

Give ONE example of a common English word
that begins with the letter sequence "STA."


Please add your single entry to our
comment list below, 
and have a great weekend!


More from mental floss studios