Tablet PC Comparison provides a wide variety of information about tablet computers. The company's website enables consumers to easily compare different tablets using factors such as cost$,$ type of operating system, display size, battery life, and CPU manufacturer. A sample of tablet computers is shown.

Product Information for $10$ Tablet Computere

$\backslash$table$[[$Tablet$,\backslash$table$[[$Cost$],[(9)]],\backslash$table$[[$Operating$],[$System$]],\backslash$table$[[$Display Size$],[($inches$)]],\backslash$table$[[$Bottery Ufe$],[($hours$)]],\backslash$table$[[$CPU$],[$Manufacturer$]]],[$Acer Lconia W$510,599,$Windows,$10\mathrm{.}1,8\mathrm{.}5,$Intel$],[$Amazon Kindle Fire HD$,299,$Android,$8\mathrm{.}9,9,$TI OMAP$],[$Apple IPad $4,499,105,9\mathrm{.}7,11,$Apple$],[$HPP Envy X$2,860,$Window$5,11\mathrm{.}6,8,$Intel$],[$Lenovo ThinkPad Tablet,$668,$Windows,$10\mathrm{.}1,10\mathrm{.}5,$Intel$],[$Microsott Surface Pro,$899,$Windows,$10\mathrm{.}6,4,$Intel$],[$Motorola Droid Xrboard,$530,$Android,$10\mathrm{.}1,9,$TI OMAP$],[$Samsung Ativ Smart PC$,590,$Windows,$11\mathrm{.}6,7,$Intel$],[$Samsung Galaxy Tab,$525,$Android,$10\mathrm{.}1,10,$Nvidia$],[$Sony Tablet $5,360,$Android,$9\mathrm{.}4,8,$Nvidia$]]$

How many elements are in this data set?