Question

Daca a=1+2+3+…...+299sib=1+2+3+4+…......+297,calculeaza a-b

Answer 1

a= 2S=299ori
S=(299ori 300)
S=89.700
b=2S=297ori
S=(297ori298)
S=88.506
a-b=1.194

Answer 2

Faci prin metoda lui Gaus.
(299×300)÷2
=44850
(297×298)÷2
=44253.
=>a-b=44850-44253=597.