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If the sum of m terms of an AP is n and the sum of n terms is m , then the sum of ( m + n ) terms is

Options

  1. Am n
  2. Bm+n
  3. C2(m+n)
  4. D-(m+n)

Correct answer

D. -(m+n)

Step-by-step solution

Given, S _ m = n and S _ n = m This is direct formula S _ m + n =-( m + n )

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