The Brain Teaser: Scroll Down for your Solution
1. Four people can sit at a table in twenty-four different arrangements. How many arrangements are possible for seating eight people?
2. Soon little Freddie will celebrate his tenth birthday. In 11 years Freddie will reach half the average age of his parents. His mother is only 17 years older than her son. How old are Freddie's father and mother.
3. Unscramble the following letters to form a word.
R E I A E T N S R A S B
1. 40,320 ways.
2. Right now Freddie is nine years old. That means he will be 20 years old 11 years from now. If that is half the average age of his parents, at age 20 he will have reached one quarter of the combined ages of his father and mother. There the combined ages of his parents must be 80 years. Since his mother was only 17 years old when Freddie was born, she will be 37 years old when he is 20. Consequently, his father must be 43. Today his mothers age is 26 and his father is 32.