Question

1+2+3+...+1199+1200=?

Answer 1

1+2+3+.........+1199+1200 = ?

1+1200 = 1201

1200 : 2 = 600

( 1 + 1200 ) * 600

1201 * 600 = 720600 ......

Answer 2

$Intr-adevar~raspunsul~final~pe~care-l~voi~scrie~este~la~fel~cu~cel~ \\ din~raspunul~anterior! \\ Insa~nu~ma~pot~abtine~in~a~nu~adauga~ceva! \\ 1+2+3+...+1199+1200=SUMA~LUI~GAUSS \\ Formula~sumei~~lui~~Gauss= \frac{n(n+1)}{2} ,unde n-ultimul~termen. \\ Asadar,S= \frac{1200*1201}{2} =600*1201=720600 \\ Te~rog,daca~alegi~sa~dai~`cuiva~coroana~,sa~alegi~pe~cine~ti-a~ \\ raspuns~primul,adica~nu~mie! :)$