Steps: Writing the set of consonants
Consonants in the word \(\text{'HONG- KONG'}\) are two \(Ns,\) two \(Gs,\) and \(K, H.\)
But in the set the letter should not be repeated.
We use lowercase for elements while writing in set.
Hence, the required set is \(\left \{ h,n,g,k \right \}\).