Răspuns :
a-1numar
b-2numar
c-3numar
d-4numar
a+b+c+d=60
a=18
b=18/2=9
c=9*3=27
d=60-(18+9+27)
d=60-54
d=6
R/s:
1n=18
2n=9
3n=27
4n=6
b-2numar
c-3numar
d-4numar
a+b+c+d=60
a=18
b=18/2=9
c=9*3=27
d=60-(18+9+27)
d=60-54
d=6
R/s:
1n=18
2n=9
3n=27
4n=6
18:2= 9 al doilea 9 x 3 = 27 al treilea
60 -(18 +9+27)=60 -54 = 6 al patrulea
60 -(18 +9+27)=60 -54 = 6 al patrulea