Sender has two syllables. The syllables are send-er.
Sender Unknown has 258 pages.
"Its" has one syllable.
Question is unclear. What's a sender?
The word "to" has one syllable.
There is 1 syllable.
it has one syllable
There is 1 syllable
In the word "the", there is one syllable.
one syllable
There is 1 syllable.
one syllable--and syllable is missing an "s". You should say "How many syllables is winked?"
Mean has only 1 syllable.