rubsune2 rubsune2
  • 23-04-2020
  • Mathematics
contestada

answer like gauss 1+3+5+7+...=999

Respuesta :

Danutz98
Danutz98 Danutz98
  • 23-04-2020

1+3+5+7+...+999 =

= 1+2+3+4+...+500

     +1+2+3+...+499

= 2·(1+2+3+...+499) + 500

= 2·(499·500)/2 + 500

= 499·500 + 500

= 500·(499 + 1)

= 500·500

= 250.000

Answer Link

Otras preguntas

Please answer. And explain. 20pts
In the figure shown, which pair of angles must be complementary? ∠AOC∠AOC ​ and ∠COD∠COD ​ ∠COB∠COB ​ and ∠AOC∠AOC ​ ∠AOC∠AOC ​ and ​ ∠DOB∠DOB ​ ∠COD∠COD and ∠D
what percentage would 1:3 be?
True or false? the perfectly competitive firm should always produce the output level for which price equals marginal cost. explain your reasoning
People with a _______ can eat just about anything they want and not gain weight. a. low metabolic rate b. high metabolic rate c. fixed weight set point d. f
What is another way to write 32 past 8 o'clock?
i need help fast plz!
The audience watching the play knew the criminal was hiding behind the sofa, but the characters were unaware of this fact. This sentence describes an example
In which year did the battle of gettysburg occur? a. 1861 b. 1862 c. 1863 d. 1864
What is the GCF of 2+18+40