Question

7. Calculaţi:
a) (1 + 2 + 3 + ... + 14):(1+2+3+ ... + 6);
b) (123.... : 15):(1+2 +3 + ... +15).​

Answer 1

Răspuns:

a.( 14*15:7):(6*7:2)= 30:21

teorema lui gauss

Answer 2

Răspuns:

a)  = ((14x15):2) : ((6x7):2)

=105 : 21

=5

b). = ((15x16):2 ): ( (15x16):2)=

120:120=

1