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geerky42 Group Title

Using the following array, determine the value of the mean of the 19th row.

  • one year ago
  • one year ago

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  1. geerky42 Group Title
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    |dw:1364052369205:dw|

    • one year ago
  2. ParthKohli Group Title
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    Just pattern recognition... The mean of the 1st line is \(2\). The mean of the 2nd line is \(5\). The mean of the 3rd line is \(10\). The mean of the 4th line is \(17\). You're just adding 3, then adding 5, then adding 7, then adding 9... and so on

    • one year ago
  3. geerky42 Group Title
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    Smart approach. Thanks!

    • one year ago
  4. ParthKohli Group Title
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    You can figure out the mean of the 5th line by adding 9, then the mean of the 6th line by adding 11... You're welcome!

    • one year ago
  5. ParthKohli Group Title
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    But that's long work, so I have another pattern recognition thingy.

    • one year ago
  6. ParthKohli Group Title
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    Never mind, just use that one.

    • one year ago
  7. geerky42 Group Title
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    That's fine, I can handle it. I got 362. Am I correct?

    • one year ago
  8. geerky42 Group Title
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    I didn't add 39.

    • one year ago
  9. ParthKohli Group Title
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    No, you're right lol

    • one year ago
  10. geerky42 Group Title
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    Oh ok. Just making sure. Thanks!

    • one year ago
  11. RadEn Group Title
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    |dw:1364053086567:dw|

    • one year ago
  12. ParthKohli Group Title
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    Oh yeah, sum of an arithmetic sequence :-)

    • one year ago
  13. RadEn Group Title
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    yup :)

    • one year ago
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