A product of the numbers 21 and 11 using digital roots is 567.
 
Digit root of 21 \(=\)
 
Digital root of 11 \(=\)
 
Product of digital root of 21 and 11  is \(=\)
 
Digital root of 567 \(=\)
 
Product of digital root of 21 and 11  is Digital root of 567
 
Therefore, the given statement is .