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Un Formula.pdf

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Un Formula.pdf

  1. 1. Use Un formula The 10th term = 5 + (10-1) x 8 = 5 + 9 x 8 = 5 + 72 = 77 The 20th term = 5 + (20-1) x 8 = 5 + 19 x 8 = 5 + 152 = 157 The 50th term = 5 + (50-1) x 8 = 5 + 49 x 8 = 5 + 392 = 397
  2. 2. 4. The 4th term = 39 Term-to-term rule is add 7. 1st term is …?

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