If the denominators of two fractions are same, the fraction with larger numerator is greater.
Both the fractions have same denominators.
So, just compare the numerators 7 and 2.
Since 7 > 2,
If the numerators of two fractions are the same, the fraction with the smaller denominator is greater.
Both the fractions have same numerator.
So, just compare the denominators 5 and 7.
Since 5 < 7,
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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 is the smallest number.