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NCERT-SEQUENCES AND SERIES-EXERCISE 9.2
- Sum of the first p, q and r terms of an A.P are a, b and c, respectiv...
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- Insert five numbers between 8 and 26 such that the resulting sequence...
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- A mail starts repaying a loan as first instalment of Rs. 100. If he i...
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- The difference between any two consecutive interior angles of a polyg...
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- Between 1 and 31, m numbers have been inserted in such a way that the...
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- If the sum of first p terms of an A.P. is equal to the sum of the fir...
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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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- The ratio of the sum of m and n terms of an A.P. is m^(2) :n^(2). Show...
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- If (a^n+b^n)/(a^(n-1)+b^(n-1))is the A.M. between a and b, then find t...
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- If the sum of n terms of an A.P. is (p n+q n^2), where p and q are co...
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- The sums of n terms of two arithmetic progressions are in the ratio 5...
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- If the sum of a certain number of terms of the A.P. 25, 22, 19.... is...
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- Find the sum to n terms of the A.P., whose k^(t h)term is 5k + 1.
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- How many terms of the A.P. 6, -(11)/2,-5,...........are needed to gi...
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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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- Find the sum of all natural numbers lying between 100 and 1000, which...
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- In an A.P., the first term is 2 and the sum of the first five terms i...
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- Find the sum of odd integers from 1 to 2001.
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