Dyn virtual currency

1. What is true or false? The main network is running and the blocks can be synchronized. The official Lingying can check it. You are too amateur to ask

2. Currency exchange
1 RMB yuan =0.01840 Botswana pra
1 Botswana pra =54.3441 RMB yuan
converted to
data for reference only. The transaction time is based on the bank counter transaction price update time: 2014-01-26 10:20

foreign currency for RMB, see the latest cash purchase price of

the formula is: (foreign currency) ÷ 100 × The purchase price of cash = convertible RMB

if you don't believe me, you can calculate it by yourself http://www.boc.cn/sourcedb/whpj/
daily foreign exchange rate of Bank of China^ ω^ Thank you for your support o(∩_ ∩) O
the mobile phone questioner can click [satisfied] in the upper right corner of the client! o(∩_ ∩) O

originality is only for you, and the adoption of the benefactor is the driving force of the cultivation of the poor way!! o(∩_ ∩)o

3.

The most common length units are kilometer (km), meter (m), decimeter (DM), centimeter (CM) and millimeter (mm). The conversion relationship between them is as follows:

1km (km) = 1000m (m), 1m (m) = 10decimeter (DM)

1 km (km) = 1000 m (m) = 10000 decimeters (DM) = 1000 00 cm (CM) = 1000 000 mm (mm)

1 m (m) = 10 decimeters (DM) = 100 cm (CM) = 1000 mm (mm)

1 decimeter (DM) = 10 cm (CM) = 100 mm (mm)

1 cm (CM) = 10 millimeters (mm)

2 Time unit conversion

1 century = 100 years, 1 year = 12 months

big month: refers to the month with 31 days in the Gregorian calendar (Gregorian calendar)

Xiaoyue: refers to the month with 30 days in the solar calendar or 29 days in the lunar calendar. Small month (30 days): April, June, September, November

Normal year: the year without leap day in the solar or lunar calendar, or the year without leap month in the solar and lunar calendar. There are 365 days in a normal year, 366 days in a leap year, 28 days in a normal year and 29 days in a leap year

leap year: a year with a leap day in the solar or lunar calendar, or a year with a leap month in the solar or lunar calendar

1 day = 24 hours, 1 hour = 60 minutes

day: the time unit based on the earth rotation cycle, equal to 86400s

points: the auxiliary unit of time

1 minute = 60 seconds, 1 hour = 3600 seconds

seconds: the basic unit of time

Third, the conversion of RMB units

method: the relationship between RMB units is decimal

1 yuan = 10 Jiao

yuan: monetary unit, RMB is the legal currency symbol of the mainland of the people's Republic of China, the unit of RMB is yuan, and the subsidiary currency unit of RMB is Jiao and Fen. The currency symbol of RMB is "￥". For example, RMB 100 can be written as RMB ￥ 100 (different from Japanese yen), or ￥ 100

1 jiao = 10 points

Jiao: monetary unit, one tenth of one yuan

1 yuan = 100 points

points: monetary unit, one percent of one yuan

Four, weight unit conversion

< 1 ton = 1000 kg, 1 ton = 1000 000 g

ton: ton is the weight unit, metric one ton is equal to 1000 kg: the unit for calculating the volume of a ship, one ton is equal to 2.83 cubic meters (100 cubic feet)

1kg = 1000g, 500g = 1kg

kg: G, (symbol kg or kg) is the basic unit for measuring mass in the international system of units, and kg is also one of the most commonly used basic units in daily life. One kilogram is defined as the mass of the international kilogram, which is almost equal to one liter of water

1kg = 1kg, 1kg = 2kg

kg, or kilogram, is the basic unit for measuring mass in the international system of units, and kilogram is also one of the most commonly used basic units in daily life

5. Conversion of area unit

1 square kilometer = 100 hectares

square kilometer: square kilometer (the symbol is k m2) is the metric unit of area, which is defined as "the area of a square with a side length of 1 kilometer"

1 hectare = 10000 square meters

hectare: the unit symbol of hectare is represented by "hm2", where HM is 100 meters, and hm2 means square hectometer, that is 10000 square meters, i.e. 1 hectare

1 square meter = 100 square decimeters

square meter: square meter (M2), is the metric unit of area. It is defined as the area of a square with a side length of 1 meter. In daily life, square meter is usually referred to as "square meter" or "square meter". Hong Kong and Taiwan are called "square meters"

1 square decimeter = 100 square centimeter

square decimeter: square decimeter (symbol is d ^) is the metric unit of area, which is defined as "the area of a square with side length of 1 decimeter"

1 square centimeter = 100 square millimeter

square millimeter: square millimeter (the symbol is m m2) is the metric unit of area, which is defined as "the area of a square with a side length of 1 mm"

6. Volume unit conversion

cubic meter; Cubic decimeter; Cubic centimeter

volume unit: liter; Ml

1 m3 = 1000 cubic decimeter; 1 cubic decimeter = 1000 cubic centimeter

1 liter = 1000 ml; 1 liter = 1 cubic meter; 1 ml = 1 cubic centimeter, 1 cubic meter = 1000 cubic decimeter

1 cubic decimeter = 1000 cubic centimeter; 1 cubic decimeter = 1 liter; 1 cc = 1 ml; 1 cubic meter = 1000 liters

4. The reserve fund should be prepared for money withdrawal. When people save 2000 yuan, 1800 yuan can be loaned out, and 200 yuan can't be moved. The reserve fund is not fixed by 10%. From the overall situation, the larger the capital scale, the smaller the reserve ratio. If you deposit one yuan to me, my reserve fund is 100%. If there are 100 people who deposit one yuan to me, my reserve fund can be about 40%, If there are ten thousand people, each of them can deposit one yuan to me, my reserve will be 10%

5. 2000+1800+1620+……+0=
即:=2000+2000*10+2000*10%^2+2000*10%^3+……+2000*10%^n