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When a number is divided by 2 / 9, its quotient is the reciprocal of the fractional unit of 2 / 9. What is the number?
The reciprocal of a 2 / 9 fractional unit is 9
(2/9)/9=2/81
The number is 2 / 81
Validation (2 / 9) / (2 / 81) = 9
The quotient of the smallest two digits divided by the reciprocal of two is
1/2 ÷10=1/20
Judge that the quotient of 1 divided by a number (except 0) is equal to the reciprocal of the number
That's right
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