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For how many integers n where 2≤n≤100 is (n2) odd?

 Sep 30, 2020
 #1
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There are 33 values of n that work.

 Sep 30, 2020
 #2
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can you elaborated on that more?

DragonXlayer  Sep 30, 2020
 #3
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For how many integers n where 2≤n≤100 is (n2) odd? 

 

1^2=1

2^2=4

3^2=9

5^2=25

6^2=36

7^2=49

8^2=64

9^2=81

 

so all odd numbers will have an odd square.   How many odd numbers are there between 2 and 100?

 

I have assumed that n2 is n^2. 

In retrospect, that is probably not what you meant but we should not have to be mind readers.

 Sep 30, 2020
edited by Melody  Sep 30, 2020

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