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The sum of three numbers in G.P. is 56. ...

The sum of three numbers in G.P. is 56. If we subtract 1, 7, 21 from these numbers in that order, we obtain an arithmetic progression. Find the numbers.

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The correct Answer is:
8,16,32
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NCERT TELUGU-SEQUENCES AND SERIES-Miscellaneous Exercise On Chapter 9
  1. The sum of some terms of G.P. is 315 whose first term and the common r...

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  2. The first term of a G.P. is 1. The sum of the third term and fifth ter...

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  3. The sum of three numbers in G.P. is 56. If we subtract 1, 7, 21 from t...

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  4. A G.P. consists of an even number of terms. If the sum of all the term...

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  5. The sum of the first four terms of an A.P. is 56. The sum of the last ...

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  6. If (a + bx)/(a - bx) = (b + cx)/(b - cx) = (c + dx)/(c - dx)( x ne 0),...

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  7. Find the 5th term of the sequence 1,sqrt2, 2

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  8. Find the 6th term from the end of the A.P:17,14,11,.......-40

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  9. If a ((1)/(b) + (1)/(c )), b ((1)/(c )+ (1)/(a)), c ((1)/(a) + (1)/(b)...

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  10. If a, b, c, d are in G.P, prove that (a^n + b^n), (b^n + c^n), (c^n +...

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  11. Find the product of the following pairs? -10ab^(3),-6a^(2)b

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  12. Find the product of the following pairs? 6pq,-2pq^(2)

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  13. Find the product of the following pairs? 2lm,5m

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  14. Find the sum of the following series up to n terms: (i) 5+55+555+......

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  15. Find the 20^(th) term of the series 2 xx 4 + 4 xx 6 + 6 xx 8 + ... + ...

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  16. Find the sum of the first n terms of the series: 3+ 7 +13 +21 +31 +......

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  17. If S(1), S(2),S(3), are the sums of first n natural numbers their squ...

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  18. Find the product of the following pairs? a^(2)bc,12b^(3)c

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  19. Find the product of the following pairs? 12p^(3)q,5p^(2)q^(2)

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  20. A farmer buys a used tractor for Rs 12000. He pays Rs 6000 cash and ag...

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