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

Mathematics
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|dw:1364052369205:dw|
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
Smart approach. Thanks!

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Other answers:

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!
But that's long work, so I have another pattern recognition thingy.
Never mind, just use that one.
That's fine, I can handle it. I got 362. Am I correct?
I didn't add 39.
No, you're right lol
Oh ok. Just making sure. Thanks!
|dw:1364053086567:dw|
Oh yeah, sum of an arithmetic sequence :-)
yup :)

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