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On selling a pendrive for Rs 708.50, a man gains 9%. For how much should he sell it to gain 11%? The difference between the

  1. On selling a pendrive for Rs 708.50, a man gains 9%. For how much should he sell it to gain 11%?
  2. The difference between the compound interest, compounded annually and the simple interest on a certain sum for 2 years at 9% per annum is Rs 81 Find thesum.
  3. ExplainDe Morgan's Law withexamples
  4. If 4 times the 4th term of an A.P. is equal to 9 times the 9th term of the A.P., what isthe 13th term of thisA.P.?
  5. Solve using Cramer's rule

3x + y + z = 3

2x + 2y + 5z = -1

x - 3y - 4z = 2

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