If \(Sm =1+2+3+\ldots+( m -3)\), find \(6 S _6-2 S _8\) - SchoolNGR

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If \(Sm =1+2+3+\ldots+( m -3)\), find \(6 S _6-2 S _8\)

If \(Sm =1+2+3+\ldots+( m -3)\), find \(6 S _6-2 S _8\)

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Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE

A 6
B 18
C 4
D 8

Correct Answer: Option C

Explanation:

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