The number that appears most frequently among a set of numbers is called mode of the given set of numbers.
For example: Mode of the set of numbers {6, 3, 5, 6, 3, 3, 3} is 3 as 3 occurs the maximum number of times (4 times).
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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.