Numbers

By Kathleen Adams, Amanda Bower, Val Castronovo, Randy Hartwell, Ellin Martens, Sora Song, Joel Stein and Josh Tyrangiel

1 in 200 Chance of an individual tax return being audited by the IRS last year

1 in 60 Chance of being audited in 1996

$6 million-12 million Amount George W. Bush's heirs could gain if he succeeds in repealing the estate tax

$10 million-45 million Amount Dick Cheney's heirs could gain

2 Percentage of estates in the U.S. large enough to qualify for the estate tax

25,500 Number of genes that make up a mustard plant

30,000 Number of genes that make up a human being

70,000 Number of questions asked in January about Britney Spears on the website Ask Jeeves

97 Percentage of people who asked to see pictures of Spears

3 Percentage of people who asked to see song lyrics

Sources: IRS; Wall Street Journal; Science News; Ask Jeeves