Array de 10 numeros de 1 al 100

Suma , media y orden a la inversa



Array
(
    [0] => 51
    [1] => 36
    [2] => 26
    [3] => 18
    [4] => 74
    [5] => 86
    [6] => 58
    [7] => 69
    [8] => 59
    [9] => 76
)
la suma de los numeros es:  553
La media de los nĂºmeros es:   47.7
El array en orden inverso:
Array ( [0] => 76 [1] => 59 [2] => 69 [3] => 58 [4] => 86 [5] => 74 [6] => 18 [7] => 26 [8] => 36 [9] => 51 )