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CBSE XI
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Math
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Sequences and Series
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Q)
How many terms of the A.P. $-6,-\large\frac{11}{2}$$, -5........$ are needed to give the sum $-25$
$\begin{array}{1 1}20\;or\;5 \\ 25\;or \;4 \\ 21 \\ 24 \end{array} $
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