Lets Start The Week,

with a few brain teasers, 

the outer circle is of course a circle, but what about the strange shaped inner one? 

next a question, 

Of the 100 people at a recent party, 90 spoke Spanish, 80 spoke Italian, and 75 spoke Mandarin. At least how many spoke all three languages?

another question but you must complete this rapidly,  

Quick! Count the number of times that the letter F appears in the following sentence:

“Finished files are the result of years of scientific study combined with the experience of years.”

 how many did you find?

scroll down for the answers,

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and the answers are:

both are complete circles, 

at the party 45 could speak all three languages, and here is why that is the answer, 10 could not speak Spanish, 20 could not speak Italian, and 25 could not speak Mandarin. So there could have been 10 people who spoke none of those languages, however, that would maximise the number of people who could speak all three, and the problem asks at least how many speak all three. Therefore, we must assume that these 10, 20, and 25 people are all separate people. Having identified 55 each of whom is missing one language, the remaining 45 speak all three.

most people say they see three of the letter F, why? We often don’t correctly process the word “OF” for two reasons. First, the letter F usually makes the “f” sound, like in “fox”. However, in the word “of”, it makes a “v” sound. Second, you have probably read the word “of” so many times in your life that you process it as one unit, overlooking the second letter/ sound,

and lastly one that does not really require an answer, it is the Stroop Test, and is used in neuropsychological evaluations to measure mental vitality and flexibility, since performing well requires strong attention, inhibition and self-regulation capability, it looks so simple, but is fiendishly difficult, this is what you have to do, (I should warn others near by that it does involve talking to yourself), you have to perform this very quickly, say aloud what colour you see in every word, NOT the word you read, go from left to right, from top to down, Ready. Set. Go!

that has got the brain working so now time for a coffee!