Question

Rapid va roooooog!!!!!

Answer 1

6. Suma lui Gauss

1 + 2 + 3 + .............. + 14 =

S = n( n + 1 ) : 2

n = ultimul nr, 14 .

S = 14 ( 14 + 1 ) : 2

S = 14 × 15 : 2

S = 210 : 2

S = 105 ( suma )

7. r + g + a = 18660

g + a = 11160

r + g = 13570

----------------------------------------

r , g , a = ?

13570 + a = 18660

a = 18660 - 13570

a = 5090 ( beculete albe )

g + 5090 = 11160

g = 11160 - 5090

g = 6070

r + 6070 = 13570

r = 13570 - 6070

r = 7500

Sper ca te-am ajutat !