Question

Media aritmetica a 5 nr pare consecutive este 24.Afla nr.

Answer 1

Fie a primul nr. par ⇒
$24= \frac{a+(a+2)+(a+4)+(a+6)+(a+8)}{5}$
$24= \frac{5a+20}{5}$
120=5a+20
5a=100
a=20