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And counting (Posted on 2019-02-28) Difficulty: 3 of 5
a + b + c = 3
a2 + b2 + c2 < 10
a3 + b3 + c3 = 15
a4 + b4 + c4 = 35
a5 + b5 + c5 = m

Find m.

No Solution Yet Submitted by Danish Ahmed Khan    
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Comments: ( Back to comment list | You must be logged in to post comments.)
If we're sharing non-analytical solutions | Comment 3 of 4 |
I quick plot on desmos makes it pretty clear that a solution exists with one of the variables =1.
Letting c=1 we can easily find the others: a=1+sqrt(2), b=1-sqrt(2)
From which the solution is 83.

Also the squares sum  to 7<10

  Posted by Jer on 2019-03-01 07:47:40
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