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Could somebody help me with this problem? Thanks

 Nov 28, 2021
 #1
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1 + 2 + 3 + 4  + ... + 10 = 55

Let the number she didn't include be called x. 

55 - x = a square number. 

x has to be in the interval [1, 10]

The largest square number less than 55 is 49. 

55 - x = 49

x = 6

 

I hope this helped. :))

 

=^._.^=

 Nov 28, 2021

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