WHAT BUILT A TABLE ON MY SHELF OUT OF SOMETHING FROM WITHIN ITSELF R RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

A spider. The silk comes from within the spider, and the "table" (web) is often built in corners like there are on a bookshelf. Did you answer this riddle correctly?
YES  NO  

A Spider (silk comes from spider itself and it builds its table(web) on my bookshelf) Did you answer this riddle correctly?
YES  NO  

Sir Cumference Did you answer this riddle correctly?
YES  NO  

The odds are 11:1. (The probability is 1/12.)

Imagine they sat down in age order, with each person randomly picking a seat. The first person is guaranteed to pick a seat that "works". The second oldest can sit to his right or left, since these five can sit either clockwise or counterclockwise. The probability of picking a seat that works is thus 2/4, or 1/2. The third oldest now has three chairs to choose from, one of which continues the progression in the order determined by the second person, for a probability of 1/3. This leaves two seats for the fourth oldest, or a 1/2 chance. The youngest would thus be guaranteed to sit in the right seat, since there is only one seat left. This gives 1 * 1/2 * 1/3 * 1/2 * 1 = 1/12, or 11:1 odds against. Did you answer this riddle correctly?
YES  NO  

Salt Did you answer this riddle correctly?
YES  NO  

Bike-carbonate of soda! Did you answer this riddle correctly?
YES  NO  

The Letter J. Did you answer this riddle correctly?
YES  NO  

A "veg"table Did you answer this riddle correctly?
YES  NO  

Mount Sinai Did you answer this riddle correctly?
YES  NO  

The Bible Did you answer this riddle correctly?
YES  NO