Summing Consecutive Numbers To Form A Series
By DarthVader
Date: 2022-10-16
Topic: 172 see comments
Post views: 915
Summing Consecutive Numbers To Form A Series
For a series of consecutive numbers:
sum = ((first term + last term) / 2) × number of terms
Written as:
Sn = n(a1 + an) / 2
Where:
a1 = first term.
an = Last term,
Sn = Sum of n terms.
NOTE…
to calculate n:
n = (an − a1) + 1
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