How many syllables in "Television"?

In the quiz <http://www.usingenglish.com/quizzes/252.html> about counting syllables, the word "Television" returns a wrong answer if 4 syllables are selected but returns a right answer if the quiztaker selects 5 syllables.

Is there a teacher who can explain how "Television" consists of 5 syllables, please.

It is being sorted out - see the answer to your previous posting.

Tel-e-vis-i-on is 5 syllables but is usually just pronounced in 4 as i-on is prounuced "un"