Any decimal number with additional zeros to the right of last digit other than zero (1-9) is equivalent to the decimal number without the zeros.
For example: 0.2 = 0.20 = 0.200 = 0.2000.
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21,27,23
21 is the smallest number.