Why is 2x10 the same as 2x11?!

Question:

Why is 2x10 the same as 2x11?

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Additional Details

20 hours ago
I want you to guess and I don't want 2 just give away the answer. Yahoo doesn't want the punch line with the joke so check out the 360 page to see the answer.

Answers: 20 hours ago
I want you to guess and I don't want 2 just give away the answer. Yahoo doesn't want the punch line with the joke so check out the 360 page to see the answer. 2 x 10 = twenty
2 x 11 = twenty too!

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