බුද්ධි පරීක්ෂණය හා අභියෝග්‍යතාව

About the Book: Challenging IQ Test If so, try out these twenty treacherous tests and see how you score! Each quiz has twenty challenging problems that give your brain a workout, and gauge your mental flexibility and breadth of knowledge. Theyre all timed, too-you get only an hour to find synonyms, fill in missing words, make logical comparisons, complete equations, and tease out numerical progressions.