“INTERNATIONAL SCIENTIFIC RESEARCH CONFERENCE”
BELARUS, International scientific-online conference
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So, what are its characteristics? - the reader is interested. If you know it's amazing,
multiply your favorite number by 9 and write the resulting number (54) as a multiplier of
the following numbers 123456789.
×12345678
54
666666666
c) Puzzle.
A girl was asked how old she was. His answer was thought-provoking. "Subtract
three times our age three years ago from three times my age in three years, and you will get
my age," he answered.
Solution: Denote the sought number by x, then the age after 3 years will be x+3 and
the age 3 years ago will be x-3.
As a result, we get the following equation:
3(x+3)-3(x-3)=x
3x+9-3x+9=x
X=18
So, he is 18 years old.
All mathematical games are based on some mathematical theory.
They develop
children's thinking and increase their activity in the exercise of studying abstract concepts
of students. Because in them, the speed of verbal calculation, the sharpness of the sense of
competition, and the desire to reach the goal in the most correct way are clearly visible. In
mathematics, the game increases the interest in science, which creates
the need for constant
serious study. In the words of Pascal, mathematics is such a serious science that one should
not miss the opportunity to make it a little interesting.
Below are more mathematical puzzles that develop logical thinking: