How many terms of the A.P. -6,-(11)/(2),...

How many terms of the A.P. `-6,-(11)/(2),-5…` are needed to give the sum -25?

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MODERN PUBLICATION-SEQUENCES AND SERIES-NCERT FILE QUESTIONS FROM NCERT BOOK (EXERCISE 9.2 )

Find the sum of odd integers from 1 to 2001.
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Find the sum of all natural numbers lying between 100 and 1000, whi...
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In an A.P., the first term is 2 and the sum of the first five terms is...
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How many terms of the A.P. -6,-(11)/(2),-5… are needed to give the sum...
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In an A.P., if p^(t h)term is 1/qand q^(t h)term is 1/p, prove that t...
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If the sum of a certain number of terms of the A.P. 25, 22, 19.... ...
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Find the sum to n terms of the A.P., whose kth term is 5k+1.
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If the sum of n terms of an A.P. is (pn+qn^(2)), where p and q are con...
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The sum of n terms of two arithmetic progressions are in the ratio 5n+...
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If the sum of first p terms of an A.P. is equal to the sum of the firs...
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Sum of the first p, q and r terms of an A.P are a, b and c, respectiv...
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The ratio of the sums of m terms and n terms of an A.P. is m^(2) : n^(...
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If the sum of n terms of an A.P. is 3n^(2)+5n and its mth term is 164,...
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Insert five numbers between 8 and 26 such that the resulting sequence ...
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"If " (a^(n)+b^(n))/(a^(n-1)+b^(n-1))" is the A.M. between" a and b, t...
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Between 1 and 31, m numbers have been inserted in such a way that the ...
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A man starts repaying a loan as first instalment of Rs. 100. If he ...
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The difference between any two consecutive interior angles of a polyg...
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