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Multiplication as Repeated Addition

Multiplication can be defined in terms of repeated addition.

For example, 4 x 5 means 4 groups of 5.

This means 5 added 4 times.

So, 4 x 5 = 5 + 5 + 5 + 5 = 20.
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Help

The correct answer is

Remember :

The smallest number is the one that comes first while counting.

Solution :

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.