Question

Media aritmetica a cinci numere naturale consecutive este 12.Aflati numerele

Answer 1

(a+b+c+d+e)/5=12 a+b+c+d+e=5·12 a+b+c+d+e=60 b=a+1;c=a+2;d=a+3;e=a+4; a+(a+1)+(a+2)+(a+3)+(a+4)=60 5a=60-1-2-3-4 5a=50 a=50/5 a=10; b=a+1 b=10+1 b=11; c=12 d=13 e=14;

Answer 2

(a+b+c+d+e)/5=12
a+b+c+d+e=5x12
a+b+c+d+e=60
a+a+1+a+2+a+3+a+4=60
5a=60-10
5a=50
a=10
b=11
c=12
d=13
e=14

V:10+11+12+13+14):5=60:5=12