A golf ball and tee together sells for $1.05. The golf ball costs $1.00 more than the tee. What is the cost of the golf tee? Answer. The golf ball costs $1.025 and the tee costs $0.025. Many people answer that the tee costs $0.05, but this would mean that the golf ball would only …
Peter is looking at Mary, while Mary is looking at Paul. Peter is married. Paul is unmarried. Is a married person looking at an unmarried person? a) yes b) no c) cannot be determined Answer: Yes. If Mary is married, then a married person (Mary) is looking at the unmarried person, Paul. However, if Mary …
Is a married person looking at an unmarried person? Read More »
In the year 2024, my dad will celebrate his 15th birthday. What is my dad’s birthday? Answer: Dad was born on February 28, 1964. His first birthday was 1968 and every fourth year after that.
An eccentric mathematician has 10 identical white socks and 10 identical black socks in his drawer. If he selects his socks at random in a dark room, how many socks must he extract to ensure he has a matched pair? Answer: He must select 3 socks to ensure he has a pair of the same …
For his graduate seminar in psychology, Professor Ross bought several copies of Entrepreneurial Genius at $18 per copy and several copies of Empowerment at $29 per copy. In total he paid $289. How many copies of each book did he purchase? Answer: The cost can be written as 18x + 29y where x and y …
Two comets, Alpha and Beta have periodic orbits with periods of exactly 76 years and 48 years respectively. When both comets appear in the same year they are said to be in conjunction. How many years are between successive conjunctions? Answer: Successive conjunctions occur at the least common multiple of 48 and 76 which is …
A special ATM machine dispenses only bills of denomination $2, $5, $10, $20 and $50. A person requesting $63 receives 6 bills. What bills were dispensed? Answer: The machine dispensed one $50-bill, one $5-bill, and four $2-bills.
During their formative years, smart people often experience success in school, receiving the approval of teachers and regular affirmation of their cognitive strengths. They become more confident in their ability to figure things out for themselves. With this, comes a habit of forming their own opinions, independent of the in-groups to which they belong. Sometimes …
A study, titled One Personality Trait Distinguishes Gifted People, and reported in Psychology Today on November 14, 2021, looked at correlations between giftedness and the Big 5 traits (Extraversion, Conscientiousness, Openness to Experience, Neuroticism and Agreeableness). See: One Personality Trait Distinguishes Gifted People They found the following: • Giftedness seems like a blessing but may be a burden. • …
Are Highly intelligent people more pleasant and Charismatic than average? Read More »
To show the relative proportions of the various subpopulations in the US, I’ve constructed the Venn diagram above wherein each subpopulation is represented (approximately) by the area of its circle. Statement: If IQ is important for success in life, why are most billionaires not people with a Ph.D.? Discussion: The red circle represents the set …
Why are most Ph.D.’s millionaires, while most billionaires do not have a Ph.D.? Read More »
