You can make three different groups of three out of nine. 9/3=3
Yes you can.
15
The two terms are different, because... 3 times 4 means: 3x4 3 to the 4th power means: 3x3x3x3
is it not a scalene triangle. you can find an image of it on google images.
Track pads , Trackballs and Pointer
It can sometimes help you to do things in the computer
According to the Amazon website, there are many trackballs with high ratings. Some brand names with the best ratings include Logitech, Microsoft, and Kensington.
Trackball to my understanding is the ball under the manual Mice which is use to move the pointer.
Trackballs don't have capacity. They are not a storage medium. Did you intend to ask something else?
Pointing device (device class including trackpoints and trackballs).
Printers, scanners, external drives, mouse, trackballs, keyboards, etc.
The variants of computer mouse are: Track pads Trackballs and pointer Integrated Pointing Device
A pointing device.There are many different types of pointing devices: mice (probably most common), touchpads (common on laptops), touchscreens (on tablets), trackballs (getting rare), lightguns (generally obsolete), etc.
Trackballs are more expensive than traditional mice because they are far less popular. They are a niche market which are often use them their entire lives.
Usually an optical mouse will be happy using the plain, generic mouse driver your operating system provides. There's nothing actually different about how the mouse talks to your computer just because it's optical. The optical data is for the mouse to process, not your computer, jusy as it was when there were trackballs in the devices.
That depends on how rough you may be with one. I have seen Blackberry cell phones with broken cases, broken screen covers, missing trackballs and/or keys, etc.