The rap-rock combo "MTV Ultimate Mash-Ups Presents Jay-Z/Linkin Park: Collision Course" debuted on top of the Billboard 200 this week.

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The magazine said Wednesday it sold 368,000 copies.

U2's "How to Dismantle an Atomic Bomb" slid to No. 2 with a 66 percent dip in sales of 288,000 units. At No. 3 was Kelly Clarkson's "Breakaway" with 250,000 copies sold.

Eminem's "Encore" falls from second to fourth on a 47 percent sales tumble to 248,000 units.

New York rapper Nas enters at No. 5 with "Street's Disciple." The set sold 232,000 copies.

Shania Twain's Mercury Nashville greatest hits collection, 49 percent weaker than last week at 195,000 copies, went from third to sixth.

Atlanta rapper T.I. notched a No. 7 bow for "Urban Legend" on sales of with 193,000 copies.

"NOW That's What I Call Music!" slipped from sixth to eighth on a 47 percent drop to 169,000, and Destiny's Child's "Destiny Fulfilled" came in at No. 9 after a 51 percent sales decline to 164,000.

Toby Keith's "Greatest Hits 2" claims the last Top 10 slot after a 57 percent dip to 142,000 units.