Game with matches Now let's look at another option for the first move: your partner takes 3 matches - 2 long matches, 1 short match, offers you to draw 2 matches. If they are the same length, you will go first; if they are different, your partner will go first.
Will this drawing of the first move be fair?
To answer this question, let us consider which matches can be pulled out if 1 match is long, 2 matches are long, 3 matches are short: 1 and 2, 2 and 3, 1 and 3. Only one out of three matches can be pulled out 2 long matches, which means that the second player has 2 times more chances. Such a drawing is unfair, you should not agree to it.
The ability to determine your chances of winning can be trained. Try to solve the problem.
Think of any unambiguous number except 0. Multiply it by 2. Add 3 to the product. Multiply the sum by 5. Throw away the first digit or, if you get a three-digit number, the first two digits. Multiply the remaining number, the last digit, by yourself. You've got 25.
Try to explain how to guess the answer!
Solving a variety of tasks ingenuity, your child will not only have fun, but also learn to reason and think logically. Filling in the "magic squares", "entertaining framework", finishing a drawing or table "by the rule", the child will develop observation and learn to establish patterns. Performing the geometrical tasks connected with construction, modelling or design of figures, drawing of a route of movement or a pattern, the child will learn to use various drawing tools that will help to develop spatial imagination. And most importantly, your child will appreciate the beauty of the queen of all sciences, and the subject "mathematics" will be one of the favorites.
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