Question

Varog mult cat mai repede!!!

Answer 1

1) Se aplica formula lui Gauss
=39x(39+1):2=39x40:2=1560:2=780

2) a+b+c=394
a+b=157
b+c=264

157+c=394
c=394-157
c=237 alune a cules al treilea copil

b+237=264
b=264-237
b=27 alune a cules al doilea copil

a+27=157
a=157-27
a=130 alune a cules primul copil

3) 5+5+5+1+1=17
15+15+5=35
15+5+5+1=26
51+5+5+1=62
15+55+1=71

4) 1000-a=800-493
1000-a=307
a=1000-307
a=693

6) a+b+c=80
a+b=50
b+c=56

50+c=80
c=80-50
c=30 m are a treia bucata

b+30=56
b=56-30
b=26 m are a doua bucata

a+56=80
a=80-56
a=24 m are prima bucata

8)
3311,3131,3113,1331,1313,1133

7) 810:3=270 lalele albe

Restul exercitiilor incearca sa le faci tu.
Trebuie sa ma mai gandesc la celelalte cum trebuiesc facute. Succes !