Multiple Choice:

If you choose an answer to this question at random what is the chance you will be correct?

A) 25%

B) 50%

C) 60%

D) 25%

(discussion at the Math Subreddit)

Posted by mathfail
on July 31, 2010
4 comments

Multiple Choice:

If you choose an answer to this question at random what is the chance you will be correct?

A) 25%

B) 50%

C) 60%

D) 25%

(discussion at the Math Subreddit)

Posted by mathfail
on July 30, 2010
No comments

One study by researchers looks at how starting a bit later in the morning can improve the performance by students. The study’s lead author is a pediatrician at Hasbro Children’s Hospital in Providence, and concludes that:

“Giving teens 30 extra minutes to start their school day leads to

more alertness in class, better moods, less tardiness, and even

healthier breakfasts…”

Another (different) study links IQ to sleep schedule. They find that night owls are smarter than other people.

Bedtimes and wake-up times for Americans in their 20s by IQ:

Very Dull (IQ < 75)

Weekday: 11:41 P.M.-7:20 A.M.

Weekend: 12:35 A.M.-10:09 A.M.

Normal (90 < IQ < 110)

Weekday: 12:10 A.M.-7:32 A.M.

Weekend: 1:13 A.M.-10:14 A.M.

Very Bright (IQ > 125)

Weekday: 12:29 A.M.-7:52 A.M.

Weekend: 1:44 A.M.-11:07 A.M.

They claim that:

“The modern world contains many features our slow-to-evolve brains still find unfamiliar–cars, TVs, hot dogs on a stick. But the world has always thrown new stuff at us, and brighter humans may adapt more ably.”

Posted by mathfail
on July 29, 2010
11 comments

Richard over at Tales of the Golem; or, the Modern Epimetheus claims to have “convincing experimental disproof of Pythagoras’s theorem!”

In the first picture, the water covers the area a^2+b^2 while in the third picture, it covers an area larger than that of c^2. Thus, a^2+b^2 > c^2. Guess all of mathematics was wrong!

Posted by mathfail
on July 29, 2010
No comments

Posted by mathfail
on July 28, 2010
5 comments

Posted by mathfail
on July 27, 2010
No comments

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