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'.

Let me give you an 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.
The answer to this example can be: 4
Here is why: The passage talks about optical mice or mouse throughout which is a part of computer system. Thus, it is correctly classified to "Computers & Internet"

OK. solve this:
The answer, of course, varies for each individual depending on how fit you are, how often do you train and what your goals are.

If you are very aggressive, you can do it in 28 weeks. Start by walking, slowly, for a
mile. Two days later, walk 1.5 miles. Every other day, increase the distance by half a mile until you get to 3 miles. Rest your muscles on the "off" day. Hold that distance on Tuesday and Thursday, while increasing by one additional mile on your weekend session (either Sat or Sun).

Once the long walk reaches 10 miles you can cut the distance in half every other weekend, increasing the long one by 2 miles each time. When the long one
gets to 18 miles, you can do it every third weekend, covering 8-9 miles on the "short" weekends.

After about the third week of training, insert a one min jog into your runs, after 4 min of walking. If this feels fine after 2 weeks, drop to 3walk/1jog. After 3 more weeks, drop to 2-1. If all goes well after another 3 weeks or so you could go to 1-1 during the week, and 2walk/1jog on the long run.

Find the ratio that works best for you, that will leave you feeling strong at the end, and recovering fast from these long ones. The pace for all of
these should be very, very slow.
Answer:
2