Fraction names a part of a whole.
When a shape is divided into two equal parts, each part is called a half.
When a shape is divided into three equal parts, each part is called a third.
When a shape is divided into four equal parts, each part is called a fourth/ a quarter.
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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.