9
Generic: How many calories are there in [food item]?
5
How old is [person name]? (Any person with a Wikipedia entry)
5
reports on open Amazon orders
3
Generic version is: How [long/tall/deep/large] is [geographical feature]?
EchoTricks.com

Echo Tricks is the world's largest collection of known Alexa commands (and easter eggs) for the Amazon Echo. Follow us on twitter @echotricks .

For more information on Amazon Echo, visit the Love My Echo blog.