Multiply Fractions by Fractions
To multiply fractions, multiply the numerators with each other and the denominators with each other. Simplify the obtained fraction, if needed.
For example: Let's find the product of the given fractions.

× 

Multiply the numerators with each other and the denominators with each other.

× 

= 

= 

Simplify:

= 

= 

So, the required product is 

. 
ds
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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.