You are given a passage. Using the information present in the passage, you need to classify it into one of the 10 topics: 0 - 'Society & Culture', 1 - 'Science & Mathematics', 2 - 'Health', 3 - 'Education & Reference', 4 - 'Computers & Internet', 5 - 'Sports', 6 - 'Business & Finance', 7 - 'Entertainment & Music', 8 - 'Family & Relationships', 9 - 'Politics & Government'.
One example: Optical mice use an LED and a camera to rapidly
capture images of the surface beneath the mouse.
The infomation from the camera is analyzed by a
DSP (Digital Signal Processor) and used to detect
imperfections in the underlying surface and
determine motion. Some materials, such as glass,
mirrors or other very shiny, uniform surfaces
interfere with the ability of the DSP to
accurately analyze the surface beneath the mouse.

Since glass is transparent and very uniform, the
mouse is unable to pick up enough imperfections in
the underlying surface to determine motion.
Mirrored surfaces are also a problem, since they
constantly reflect back the same image, causing
the DSP not to recognize motion properly. When the
system is unable to see surface changes associated
with movement, the mouse will not work properly.
Solution is here: 4
Explanation: The passage talks about optical mice or mouse throughout which is a part of computer system. Thus, it is correctly classified to "Computers & Internet"

Now, solve this: Defeated from the lackluster performance of Don't Tell a Soul, Paul Westerberg planned on recording a solo album, but Sire rejected the idea. Consequently, the next Replacements album, All Shook Down, was a solo Westerberg record in all but name. Recorded with a cast of session musicians as well as the band, All Shook Down was a stripped-down, largely acoustic affair that hinted at the turmoil within the band. Chris Mars left shortly after its fall 1990 release, claiming that Westerberg had assumed control of the band; he would launch a solo career two years later. The Replacements toured in support of All Shook Down, with Steve Foley, formerly of the Minneapolis-based Things Fall Down, as their new drummer. Neither the tour nor the album were successful, and the Replacements quietly disbanded in the summer of 1991.
Solution:
7