Forty-seven of them.
32 of them.
Three of them.
All but Louisiana, North Carolina and South Carolina.
The word restless has two syllables. rest-less (The root word rest is in bold because it is accented, or emphasized, louder than -less. -less is a suffix, and a suffix is never accented instead of the root word.)
11 States
less than 50 states in 1869
Technically this word should have 12 syllables, but because it is not a real word and rather impossible to say fluently without pauses, there could be more or less than 12 syllables when you try saying it aloud.
If you mean "How many syllables are in the word secret?", than the answer is two.
There is one syllable.
Every state except for Maine (and Guam, if you count US territories) has more then one syllables.
16
All but Louisiana, North Carolina and South Carolina