November 2, 2012

#1129: Cell Number explain

[10 boxes for 10 digits of a U.S. phone number. The first three are grouped by parentheses. A hyphen separates the second set of three and the last four.]

[Label titled “Your seven random digits” pointing at seven empty boxes.]

[Label titled “Where you lived in 2005” pointing at three empty boxes preceding the seven.]

Structure of a US cell phone number.