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MATHEMATICS

JAMB 2006 - Question 47

Mathematics 2006 JAMB Past Questions - Question 47: The sum of the first n positive integers is

Choose the most appropriate option for the gap .

The sum of the first n positive integers is

A: 1/2n(n-1)

B: n(n+1)

C: n(n-1)

D: n 1/2(n-1)

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Correct Answer

Explanation

Sn = n/2 (a(n-d) d)