Serbia, officially the Republic of Serbia, is a landlocked country situated at the crossroads of Central and Southeast Europe in the southern Pannonian Plain and the central Balkans. It borders Hungary to the north; Romania and Bulgaria to the east; Macedonia to the south; Croatia, Bosnia, Montenegro to the west and claims a border with Albania through the disputed territory of Kosovo. Serbia numbers around 7 million residents; its capital, Belgrade, ranks among the oldest and largest cities in Southeastern Europe.
Located in the continent of Europe, Serbia covers 77,474 square kilometers of land, making it the 118th largest nation in terms of land area.
Serbia became an independent state in 1878, after gaining its sovereignty from Turkey. The population of Serbia is 7,276,604 (2012) and the nation has a density of 94 people per square kilometer.
The currency of Serbia is the Serbian Dinar (RSD). As well, the people of Serbia are refered to as Serbian.
The dialing code for the country is 381 and the top level internet domain for Serbian sites is .rs.
Serbia shares land borders with 8 countries: Macedonia, Albania, Bulgaria, Romania, Croatia, Bosnia and Herzegovina, Hungary, Montenegro.
Source : https://www.worldatlas.com
]]>Wow, are you from Middle East?
I believe anonimnystefy is from Serbia. Orthodox Christians tend to celebrate Christmas on the 7th of January (as per the Julian calendar, which we don't use anymore -- we use the Gregorian calendar). Other countries do the same, like Russia.
]]>it's not Christmas here yet.
we celebrate it on 7th of January.
Wow, are you from Middle East?
]]>we celebrate it on 7th of January.
]]>oops! i think you're right.i forgot to take the condition x+y+z+12=0.i got the number of those which satisfy the equation x+y+z+12>0
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then we have x'+y'+z'=12
so x'<12 and y'<12 and z'<12
since you are looking for the number of this points i think i can assume you mean points with integer coordinates.
since 0<x',y',z'<12
we have that x',y',z' are in the set {1,2,3,4,5,6,7,8,9,10,11} which has 11 elements.
so x',y' and z' have 11 possibilities each,and so do x,y and z.
the number of such points is: 11*11*11=11^3=1331
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