In July 2012, the bitcoin mining hash target required 14 leading hexadecimal zeros. Suppose at that time you joined a mining pool with your CPU that could mine 20 million hashes per second. What is the expected mining reward per month (30 days), as measured in dollars, if the block reward was 50 BTC and each BTC traded at about $7 USD per BTC?

the answer is you.

i'm pretty sure data is stored in a form

solution:

the right option is a

to adding   a new row to a table we   have to do process last table cell and pressing tab.

this is the process to add new row in the cell:

* to add a row below the cell, click insert below in the rows and columns group.

thus this is the required right answer.