huangjianhe135
13.12.2019 •
Mathematics
The sum of the first natural number and 0 is 1, the sum of the first two natural numbers and 0 is 3, the sum of the first three natural numbers and 0 is 6, and the sum of the first four natural numbers and 0 is 10. which explicit formula generates the sum of the first n natural numbers and 0?
a) n(n+1)/2
b) 2n-1
c) n(n+4)/4
d) 3n-2
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Ответ:
Ответ:
B
Step-by-step explanation:
cause it is