Calculation force of number line graph
bitcoin itself is not a kind of currency. It is generated by a large number of calculations based on a specific algorithm. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions
e to the scarcity of bitcoin and the difficulty in obtaining it, some people regard bitcoin as an investment proct for investment. With investors, there is speculation about bitcoin. Bitcoin has gone up all the way, from less than a cent to a record high of $19850
since then, all kinds of bitcoin speculation platforms have been launched, and you can register any one to participate in the trading and speculation of bitcoin. If there is a rise, there will be a fall. This is all the result of speculation. Now bitcoin has fallen below the $10000 mark, so some people want to buy the bottom again
in my opinion, bitcoin has no investment value at all, it's just a pure follow-up hype, so from my personal point of view, I don't recommend investing in bitcoin
solution: align the subtracted and the subtracted, subtract them from the corresponding counting units, borrow 1 from the high place if they are not enough, and calculate in turn to get the result. If the subtracted is less than the subtracted, replace and subtract the two numbers, and add a negative sign to the final result; The fractional part subtraction can refer to the integer subtraction steps
problem solving process:
Step 1: 10-8 = 2 borrow
Step 2: 9-4 = 5 borrow
Step 3: 0-0 = 0
Step 4: the calculation result is 52
if you have any doubt, please ask and adopt it if you are satisfied
bitcoin is basically illiquid, because few countries now recognize the legitimacy of bitcoin
and the reason why bitcoin came before is that it has been hyped in all aspects on the Internet. Because bitcoin does not belong to anyone or any country, and the way to obtain bitcoin is very difficult , everyone can mine bitcoin on the Internet in a fair and just way, It's just that the speed of mining varies depending on the machine, which leads to different amount of bitcoin you get in the end
when the price of bitcoin was at its peak, one bitcoin was equivalent to US $40000, while today's bitcoin has fallen below US $10000. However, have you ever thought that at the beginning of bitcoin, one dollar could buy thousands of , and the price of bitcoin suddenly rose from tens of US dollars to thousands of US dollars one night, All this is the existence of human factors, so I hope you must be careful when playing digital currency
Bitcoin fell below $10000, which has nothing to do with half a cent. I've never made money on bitcoin, either. In my opinion, bitcoin has no investment value at all. It's just a pure follow-up hype. Therefore, from my personal point of view, I don't recommend investing in bitcoin
participation in bitcoin trading is currently prohibited by the state, and many financial institutions also indicate the risks of trading bitcoin. In 2017, the people's Bank of China, the central network information office, the Ministry of instry and information technology and so on issued a ban on token issuance financing activities (ICO); The trading platform shall not engage in the exchange business between legal tender and token, or virtual currency, or buy or sell token or virtual currency as a central counter party, or provide pricing, information intermediary and other services for token or virtual currency. Moreover, more and more countries prohibit the trading and use of bitcoin, because more and more countries realize that the risks brought by the trading and use of bitcoin are huge
therefore, I also advise you and your friends who want to participate in the bitcoin transaction not to be confused by the temporary illusion, nor to participate in the bitcoin speculation
Method / step
1, we first import a student's mathematics score table, and enter = round (average (B3: B13), 1 in the average value B14 cell. As shown in the figure
the upper figure contains three, four, five, six and eight sided shapes from left to right. If there is one missing in the middle, it should be the seven sided shape of course
the unclosed line in the figure is the interference condition, just ignore it
As shown in the figure,
(1) there are five line segments with a as the left end point, including AB, AC, ad, AE and AF
(2) there are four segments with B as the left end point, including BC, BD, be and BF
(3) there are CD, CE and CF segments with C as the left endpoint
(4) there are two segments with D as the left end point, including de and DF
(5) there is only one EF line segment with E as the left endpoint.
therefore, there are 5 + 4 + 3 + 2 + 1 = 15 different line segments.
so the answer is: 15
no matter how many wires pass through the switch, they are all live wires
the ground wire is directly connected to the ground terminal of the socket without the switch.
the second figure has three dimensions × 2 + 4 = 10,
so the answer is: 6; 10．
How to count figures? Is there a formula for counting figures