#a
tall = 3+1
tall = tall*2
print(f"oppgave a:{tall}")
#b
tekst = "a"+"c"
tekst = tekst+"b"
print(f"oppgave b:{tekst}")
#c
i=5
j=10
while i<j:
    i+=2
    j-=1
print(f"oppgave c:{j}")
#d
tallene = [1,6,4,2]
a=0
b=0
for tall in tallene:
    if tall<3:
        a= a+tall
    else:
        b= b+tall
print(f"oppgave d:{a*b}")
#e
def kalkuler(tall):
    if tall<5:
        return tall*2
    else:
        return tall
print(f"oppgave e:{kalkuler(4+3)}")
#f
class Tall:
    def __init__(self,a,b):
        self._a = a
        self._b = b

    def m1(self,c):
        self._b = self._b+c

    def m2(self):
        self._a = self._a+self._b

    def m3(self):
        return 2*self._a
t = Tall(3,2)
t.m1(1)
t.m2()
t.m2()
print(f"oppgave f:{4+t.m3()}")