Question

5 cifre consecutive care se pot scădea din 30 ca rezultatul sa fie 0

Answer 1

I nr   /----/
II nr   /----/+1
III nr  /----/+2      } 30 
IVnr   /----/+3
V nr   /----/+4 


30 - ( 1+2+3+4)  = 30 - 10 = 20 

20 : 5 = 4 

I = 4
II = 5
III = 6 
IV = 7 
V = 8 

30 - 4 - 5 - 6 - 7 - 8 = 0

Answer 2

x+x+1+x+2+x+3+x+4=30
5x+1+2+3+4=30
5x=30-1-2-3-4
5x=20
x=20:5
x=4

I nr =4
II nr =5
III nr =6
IV nr =7
V nr = 8

VERIFICARE :
30-4-5-6-7-8=
=26-5-6-7-8
=21-6-7-8
=15-7-8
=8-8
=0

SUCCES !