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(1-1/2)(1-1/3)..1-1 20) = 1/2 2/3 3/4 4/5 . Nineteen out of twenty (the first number.)DenominatorThe numerator equal to the second number, which can be cancelled, is equal to one-third, one-third multiplied by three-quarters is equal to one-quarter, and so on, and finally equals) = one-twentieth.
1+1/2)(1+1/3)..1+1 20) = three-thirds multiplied by four-thirds multiplied three-quarters... Multiply by 20/19 times 21/20 = 21 2.
One twentieth multiplied by 21 2 equals 21 40.
Definition. Addition: The operation of merging two numbers into a single number.
Subtraction: The operation of finding another addition in the sum of two known additions and one of them.
Multiplication: The operation of finding the product of two numbers.
1) Multiplying a number by an integer is a simple operation to find the sum of several identical additions.
2) Multiplying a number by a decimal place is to find the number of tenths, hundredths, and thousandths of the ......How much.
3) Multiplying a number by a fraction is to find out what fractions of the number are.
Division: The operation of knowing the product of two factors and one of the factors, and finding the other factor.
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1-1/2)(1-1/3)..1-1 20) = 1/2 2/3 3/4 4/5 . Nineteen twenties (you write it yourself, the denominator of the first number is equal to the numerator of the second number, which can be canceled out, equal to one-third, one-third multiplied by three-quarters is equal to one-quarter, and so on, and finally equals) = one-twentieth.
1+1/2)(1+1/3)..1+1 20) = three-thirds multiplied by four-thirds multiplied three-quarters... Multiply by 20/19 times 21/20 = 21 2.
One twentieth multiplied by 21 2 equals 21 40.
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This formula variants into.
1/2 5 Liang Eggplant 1 + 1/2 1/5.
Two out of ten oaks are old.
One out of five nanorocks.
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The difference between two equal numbers is equal to zero.
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2010 (1-1/2) (1-1/3)1-10/10 of 2010).
2010 (1/2) (2/2) (3/4) ....2008/2009) (2/2010).
2010 (1/10 of 2010) (The denominator of each term is reduced to the numerator of the latter term from the second term).
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=1-1/7
Friend, please [adopt the answer], your adoption is the motivation for me to answer the question, if you don't understand, please ask. Thank you.
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3 out of 20 10-3o out of 2o
2 points, filial piety, 3-20 parts
30/20-3/20 of 20
27/20
Proportions can be composed.
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The one-half paving method is better-looking, and the three-six-nine paving method is one-third of the paving method, which is located at one-third of the upper and lower floors of the short side of the two floors, and the joints are stepped as a whole, with a strong three-dimensional effect, but asymmetrical, and the loss is about 3%. Half paving: >>>More