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What formula can you use to find the nth triangular number

What formula can you use to find the nth triangular number
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4 votes
What formula can you use to find the nth triangular number

asked
User Steffen Langer
by
9.1k points

1 Answer

5 votes

Answer:

xn = n·(n + 1)/2

Explanation:

answered
User Ashutosh Sharma
by
7.9k points
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