Question

Afla suma resturilor impartirilor tuturor numerelor x la numar 3, unde 10<x mai mare sau egal cu 20.

Answer 1

10 < x ≤ 20 ⇒ x = ( 11; 12; 13; 14; 15; 16; 17; 18; 19; 20 )

11 : 3 = 3 rest 2

12 : 3 = 4 rest 0

13 : 3 = 4 rest 1

14 : 3 = 4 rest 2

15 : 3 = 5 rest 0

16 : 3 = 5 rest 1

17 : 3 = 5 rest 2

18 : 3 = 6 rest 0

19 : 3 = 6 rest 1

20 : 3 = 6 rest 2

2 + 0 + 1 + 2 + 0 + 1 + 2 + 0 + 1 + 2 = 11 → suma resturilor impartirilor tuturor numerelor x la numar 3, unde 10 < x ≤ 20

Raspuns: 11 ( suma resturilor )

Answer 2

x € {11,12,13,14,15,16,17,18,19,20}

Resturile vor fi:2,0,1,2,0,1,2,0,1,2

Suma resturilor=2+0+1+2+0+1+2+0+1+2=11