Can you find the sum of 50 natural numbers using algorithm?

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Can you find the sum of 50 natural numbers using algorithm?

PLSSSS

2007-10-08 16:07:16 · 3 answers · asked by disaztershobz 2 in Science & Mathematics ➔ Mathematics

3 answers

The sum of the numbers 1, 2, 3, ... , n-1, n is given by:

n*(n+1) / 2

So the first 50 natural numbers sum to:

(50) * [ (50) + 1 ] / 2
. = 50 * 51 / 2
. = 1275

2007-10-08 16:31:27 · answer #1 · answered by Ben 3 · 0⤊ 0⤋

1 + 2 + 3 + ... + 48 + 49 + 50 =
(1 + 50) + (2 + 49) + (3 + 48 ) + .... + (25 + 26) =
25(51) = 1275

that's 1st plus last time half the number of terms.

2007-10-08 23:18:08 · answer #2 · answered by Philo 7 · 1⤊ 0⤋

shall visit
http://www.primepuzzles.net/conjectures/conj_020.htm

2007-10-08 23:27:40 · answer #3 · answered by mathorator.. 1 · 0⤊ 0⤋