This is a popular riddle that should be illustrated for explanation.
(see the related link and question)
The answers are :
7
About nine.
it is eight thoothpicks
8
2
Take six bones away to spell the word TEN
You would need 5 toothpicks to spell the word "fat" without breaking or bending any. One toothpick for each letter, and an extra toothpick to form the letter "A".
30
which or witch
"ditionary" is not a real "word".
The possible word is the verb "participate" (to take part).
There are total of 9 letters in this word, and you spell it "exploding"