20 10 in B T the L are G B
10 Gallons in a Cowboy Hat
10 Perfect Score in a Gymnastics Event
This is a Ditloid 147 maximum break in a game of snooker.
a perfect game in bowling
1984 title of novel by George Orwell
3 Billy Goats Gruff and the Ugly Troll
"Ten Green Bottles Hanging on the Wall" (lyrics of a children's song; other versions have the bottles "sitting" or "standing").
Gold Medals Won by Team GB at the Beijing Olympics
Four roads to Glenamaddy
Fifth-Generation Language
This is a ditloid. The answer is 9 = gallons in a firkin.
0 degrees longitude at Greenwich