[Answer] 5. He was brother to the hell gate guardian Orthrus, at least according to Greek mythology. He had a distinctive physical appearance and it was a Herculean task to bring him to heel. Which monstrous dog am I describing?

Step 1 : Introduction to the question "5. He was brother to the hell gate guardian Orthrus, at least according to Greek mythology. He had a distinctive physical appearance and it was a Herculean task to bring him to heel. Which monstrous dog am I describing?"

...1. Canis 2. Bran 3. Barghest 4. Cerberus In Greek mythology Cerberus was the gigantic hound which guarded the gates of Hades. He was described as a three-headed dog with a serpent's tail, a mane of snakes, and a lion's claws. One of the extra clues I embedded in the question referred to a Herculean task. This was because one of the twelve 'Labours of Hercules' was to fetch Cerberus from the underworld.

[Answer] 6. "Don't try to make me change my mind with factsTo hell with the graduated income taxHow do I know? I read it in the Daily News.." sang Tom PaxtonBy law, by which date each year must people in the USA file their returns to the IRS?

Step 1 : Introduction to the question "6. "Don't try to make me change my mind with facts To hell with the graduated income tax How do I know? I read it in the Daily News.." sang Tom Paxton By law, by which date each year must people in the USA file their returns to the IRS?"

...1. April 15 2. January 31 3. June 10 4. December 31 In the USA, the tax year runs from January 1 to December 31. People living there have until April 15 to file IRS returns for the previous tax year. Other deadlines may apply to State taxes. January 31 is the deadline for tax returns in the UK.

[Answer] 10. Born on Dec. 24, 1971, he'll make you 'shake your bon-bon' over to the end of the page to check your answers!

Step 1 : Introduction to the question "10. Born on Dec. 24, 1971, he'll make you 'shake your bon-bon' over to the end of the page to check your answers!"

...1. Justin Timberlake 2. Bill Clinton 3. JC 4. Ricky Martin RICKY MARTIN! (surely not Bill!)