By Gary Gruber
FLEX YOUR mind energy like by no means prior to!
From acclaimed writer Dr. Gary Gruber, whose confirmed critical-thinking tools have offered greater than seven million books, this selection of mind-bending mind teasers is bound to problem even the main skilled challenge solver. inside of are common sense puzzles, riddles, maddening math difficulties, psychological video games, and extra!
A send is two times as previous because the ship's boiler used to be whilst the send used to be as outdated because the boiler is. The ratio of the boiler's age now to the ship's age now's what?
What English observe comprises all of the vowels, in alphabetical order?
What is the three-digit quantity that may be made up of the digits 2, three, five, and seven the place no digits within the three-digit quantity are alike, and the place the three-digit quantity is a a number of of every of the digits chosen?
Stumped? Dr. Gruber finds the attention-grabbing factors and specific innovations for fixing even the trickiest difficulties utilizing his unique Gruber procedure.
DISCLAIMER: The mind teasers during this ebook may perhaps get you so wrapped up in serious pondering that you could be no longer have the ability to do your normal paintings till you clear up them! Any abrupt or slow raise in creativity, intelligence, or motivation to get a greater activity fitted to your newfound abilities is exactly the reader's accountability.
For greater than thirty years, Gary R. Gruber, PhD, has been famous as a number one professional at the SAT, test-taking tools, and critical-thinking abilities. His tools were utilized by PBS, Sylvan studying facilities, Grolier's Encyclopedia, and college districts during the state. Dr. Gruber's cutting edge problem-solving techniques make up the guts of the hot MyMaxScore's on-line try prep (www.mymaxscore.com).