Question

Test 4: ex 3
Este o tema
Pana la 11:20 va rog

Answer 1

Răspuns:

a) 15 divizibil (x+1)

D15={1,3,5,15}

×+1=1 ×+1=3 ×+1=5 ×+1=15

×=0 ×=2 ×=4 ×=14

×€{2,4,14}

b) X mai mic sau egal 12 => ×€{0,1,3,...,11}

1 mai mic sau egal 3 la y< 81

y€{1,2,3}