Răspunsuri

2014-08-20T12:44:29+03:00
1) abba = 1000a+100b+10b+a=  1001a +110b = 11(91a+10b)  : 11 (trebuiau 3 puncte)

2)D₁₂={1,2,3,4,6,12}

3)D₂₄={1,2,3,4,6,8,12,24}

4)D₂₀₁₃={1,2013}

5)D₃₀={3,15,30}
Decibeli 1)
deci la 1 e adevărat ca este divizibil?
da