h2. Exemplu

table(example). |_. medie.in |_. medie.out |

table(example). |_. medie.in |_. medie.out |_. Explicatie|

| $5$
$1$
$1$
$1$
$1$
$1$

| $30$

| $30$ |Fiecare valoare $1$ poate fi scrisa ca media a cate doua valori din celelalte $4$ posibile.
Se vor numara tripletele:
( $1$, $2$, $3$ ), ( $1$, $2$, $4$ ), ( $1$, $2$, $5$ ), ( $1$, $3$, $4$ ), ( $1$, $3$, $5$ ),
( $1$, $4$, $5$ ), ( $2$, $1$, $3$ ), ( $2$, $1$, $4$ ), ( $2$, $1$, $5$ ), ( $2$, $3$, $4$ ),
( $2$, $3$, $5$ ), ( $2$, $4$, $5$ ), ( $3$, $1$, $2$ ), ( $3$, $1$, $4$ ), ( $3$, $1$, $5$ ), etc

|
| $3$
$4$
$2$
$1$
|$0$

|Valoarea $4$ nu este media aritmetica a valorilor $2$ si $1$,
Valoarea $2$ nu este media aritmetica a valorilor $4$ si $1$,
Valoarea $1$ nu este media aritmetica a valorilor $4$ si $2$.

|
|$6$
 $3$

 $5$
 $2$
|$6$

|
 
h3. Explicatie
 
# Fiecare valoare $1$ poate fi scrisa ca media a cate doua valori din celelalte $4$ posibile.
Se vor numara tripletele:
( $1$, $2$, $3$ ), ( $1$, $2$, $4$ ), ( $1$, $2$, $5$ ), ( $1$, $3$, $4$ ), ( $1$, $3$, $5$ ),
( $1$, $4$, $5$ ), ( $2$, $1$, $3$ ), ( $2$, $1$, $4$ ), ( $2$, $1$, $5$ ), ( $2$, $3$, $4$ ),
( $2$, $3$, $5$ ), ( $2$, $4$, $5$ ), ( $3$, $1$, $2$ ), ( $3$, $1$, $4$ ), ( $3$, $1$, $5$ ), etc
# Valoarea $4$ nu este media aritmetica a valorilor $2$ si $1$,
Valoarea $2$ nu este media aritmetica a valorilor $4$ si $1$,
Valoarea $1$ nu este media aritmetica a valorilor $4$ si $2$.
# $2$ = ( $1$ + $3$ ) / $2$

|$2$ = ( $1$ + $3$ ) / $2$

$3$ = ( $4$ + $2$ ) / $2$ ; ( $1$ + $5$ ) / $2$
$4$ = ( $3$ + $5$ ) / $2$ ; ( $6$ + $2$ ) / $2$
$5$ = ( $6$ + $4$ ) / $2$
Tripletele sunt:
( $6$, $1$, $2$ ), ( $1$, $4$, $6$ ), ( $1$, $2$, $5$ ),

( $4$, $1$, $5$ ), ( $4$, $3$, $6$ ), ( $5$, $3$, $4$ ).

( $4$, $1$, $5$ ), ( $4$, $3$, $6$ ), ( $5$, $3$, $4$ ).
|

== include(page="template/taskfooter" task_id="medie") ==