Riddle: What did the spider say to the fly on Halloween?
Answer: The web is the trick and you are the treat.
Riddle: How do spiders communicate?
Answer: Through the worldwide web.
Riddle: What kind of Doctors are like spiders?
Answer: Spin Doctors.
Riddle: Why did the spider get a job in I.T.?
Answer: Because he was a great web designer.
Riddle: If eleven plus two equals one, what does nine plus five equal?
Answer: 11 o'clock plus 2 hours = 1 o'clock 9 o'clock plus 5 hours = 2 o'clock
Riddle: 0,1,2,3,4,5,6,7,8,9 How can you use the digits above once each only to compose two fractions which when added together equal 1?
Answer: 35/70 + 148/296 = 1
Riddle: 'How much is this bag of potatoes?' asked the man. '32lb divided by half its own weight,' said the green grocer. How much did the potatoes weigh?
Answer: 8lbs.
Riddle: How can you insert the numbers 1-9 inclusive each only, into the calculation to arrive at the answer 100? ( - ) + + - - - = 100
Answer: ( 7 - 5 )²  + 96 + 8 - 4 - 3 - 1 = 100
Riddle: How many times does the long hand of the clock pass the short hand between midnight one day and midnight the following day? As both hands are together at the starting time of midnight this does not count as a pass.
Answer: 21.
Riddle: What do the rich need and poor would be helpless with?
Answer: Nothing.