Posts Tagged ‘Clinical-Trial’
Math Brain Teaser: Concentric Shapes or The Unkindest Cut of All, Part 2 of 2
If you missed Part 1, also written by puzzle master Wes Carroll, you can start there and then come back here to Part 2. Concentric Shapes: The Unkindest Cut of All, Part 2 of 2.Difficulty: HARDER Type: MATH (Spatial)Question:Imagine a square within a circle within a square.The circle just grazes each square at exactly four points.Find the ratio of the area of the larger square to the smaller.In this puzzle you are working out many of the same skills as in Part I: spatial visualization (occipital lobes), memory (temporal lobes), logic (frontal lobes), planning (frontal lobes), and hypothesis generation (frontal lobes).Click to read the Solution and Explanation.
Read MoreMath Brain Teaser: The Unkindest Cut of All, Part 1 of 2
Here is another mathematical puzzle from puzzle master Wes Carroll … The Unkindest Cut Of All, Part 1 of 2.Difficulty: HARD.Type: MATH (Spatial).Question:The area of a square is equal to the square of the length of one side.So, for example, a square with side length 3 has area (3^2), or 9. What is the area of a square whose diagonal is length 5?
Read MoreBrain Teaser: Dr. Nasty’s Giant Cube
Dr. Nasty’s Giant Cube. Difficulty: HARDER. Type: HYBRID (Logic/Spatial). The diabolical Dr. Nasty has turned his Growth Ray on a perfect cube that used to measure one foot on a side. The new larger cube has twice the surface area of the original. Find the volume of the larger cube.
Read More#14 Brain Teaser: Party For Polyglots
We are delighted to introduce you to Puzzle Master Wes Carroll who has graciously created a few new puzzles to bend all those sharp brains out there! Wes aspires to the Renaissance ideal of excellence in multiple fields: he is the head of Do The Math private tutoring services, Puzzle Master for the Ask A Scientist lecture series, and an internationally touring performer and teacher of music. Find out more at wescarroll.com.Party For Polyglots.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?
Read MoreStress Management Test
A closely monitored, scientific study revealed that, in spite of the fact that the dolphins are identical, a person under stress would find differences in the two dolphins.… Look at the photograph, and if you find more than one or two differences, you may want to take a vacation.
Read MoreI have to exercise my brain, too
I was exposed to a fun brain exercise on Monday: attend my first-ever live TV program, be ready for 3 very precise questions…and then be asked others. The anchors were fun. It was fascinating to observe, behind the scenes, the making of a news program: constant last-minute apparent chaos, the lawyer in the “ask the…
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