Basic Geometry


 


















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BRAIN STORMING...

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SUDOKU The popular Japanese puzzle game Sudoku is based on the logical placement of numbers. An online game of logic, Sudoku doesn’t require any calculation nor special math skills; all that is needed are brains and concentration. Play Free Sudoku Now! Sudoku is one of the most popular puzzle games of all time. The goal of Sudoku is to fill a 9×9 grid with numbers so that each row, column and 3×3 section contain all of the digits between 1 and 9. As a logic puzzle, Sudoku is also an excellent brain game. If you play  Sudoku daily , you will soon start to see improvements in your concentration and overall brain power. Start a game now. Within no time  Sudoku free puzzles  will be your favorite online game. The goal of Sudoku is to fill in a 9×9 grid with digits so that each column, row, and 3×3 section contain the numbers between 1 to 9. At the beginning of the game, the 9×9 grid will have some of the squares filled in. Your job is to use logic to fill in the missing digit...
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RATIO & PROPORTIONS

  RATIO & PROPORTION Ratio  A ratio is a comparison of two quantities. ● A ratio can be written as a fraction; ratios are mostly written in the simplest form. ● In the above example, the ratio of rice to water in terms of the number of cups can be written in three different ways as 1 : 2 or  1/2 or 1 to 2 . Properties of Ratio ● A ratio has no unit. It is a number. For example, the ratio of 8 km to 4 km is written  as 8 : 4 = 2 : 1 and not 2 km : 1 km. ● The two quantities of a ratio should be of the same unit. The ratio of 4 km to 400 m  is expressed as (4 × 1000) : 400 = 4000 : 400 = 10 : 1 ● Each number of the ratio is called a term. ● Order of the terms in a ratio cannot be reversed.  We can get equivalent ratios by multiplying or dividing the numerator and denominator by a common number. Proportion When two ratios are equal , we say that the ratios are in Proportion. This is denoted as a : b : : c : d and it is read as ‘a is to b as c is to d’....
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MATH PUZZLE...

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  MATHEMATICS PUZZLE   1)  There are five squares (one 3x3 and four 1x1) formed with 20 matchsticks, as shown in the illustration. Move two matchstick to get seven squares. Overlapping or breaking of matchsticks or "loose ends" are not allowed. ANSWER: Seven squares are formed: five 1x1 squares, one 2x2 square, and one 3x3 square. 2) What is unique about 8549176320 ? It is the digits 0 to 9 in  alphabetical  order. Note: it can also be exactly divided by all of the digits 1-9 except 7 (thanks to "The Hermit") 3) Answer : 35 4) Answer : 24 5) ANSWER:14 6) ANSWER: 22 7) Answer : 333
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