Question

Ajutorrr!!!! Dau coroana!!!

Answer 1

1.3+2x5-12:4

3+10-3

13-3

10 (A)

2.D

3 .x:7=5 rest r cu r<7 ⇒ x=7*5+r=35+r cu  r∈{0,1,2,3,4,5,6}  

S=35+36+37+38+39+40+41=(35+41)*7/2=76*7/2=38*7=266

4.42x divizibil cu 3⇒x=0,3,6,9

0×3x6x9=0 deci B raspuns corect