Answer:
By making calculation.
Explanation:
Because spreadsheet is a calculation type software.
Answer: Interface methods, interface variables and interface markers.
Explanation:
Interface methods are public and abstract by default.
Interface variables can be declared public, static and final
Marker interfaces are simply empty interfaces without any methods.
Answer: B webcast
Explanation:
A webcast is a technology that allows the live broadcast of an audio or video event on the Internet. It is also known as Web lecture, virtual meeting, etc. The major advantage is that it gives room for an event to have a larger reach. Webcast participation can be through PC, smart phones, tablets and other devices with quality Internet access.
