Riddles

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Across
  1. 3. I am a odd number but take away a letter I am even what number am I?
  2. 7. have no life but I can die. What am I?
  3. 8. What did cat for 10+10 and 11+11?
  4. 9. I have rings but I am not jewelry. What am I?
  5. 12. Rich people need it, poor people have it and if you eat me you die. What am I?
Down
  1. 1. What has four eyes but cannot see?
  2. 2. What do Alexander the great and Winnie the Pooh have in common?
  3. 4. What is heavy backwards but forwards it is not?
  4. 5. What is always ahead of us but we can never see it?
  5. 6. 1+1+1+1+1+1+1+1x0+1
  6. 10. What has a hand and cannot clap?
  7. 11. What goes up but doesn't ever come down?
  8. 13. What can you put in a bucket to make it weightless?