Please po patulong po ako The sum of the first n natural numbers 1+2+3+..+(n-1)+n is determined by the formula n(n+1)/2.How many natural numbers starting with 1 will give a sum of 820? Thankss po
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Answer:
40 natural numbers
if n = 40...
40(40+1)/2
40(41)/2
1640/2
=820