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# help

0
167
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Find the number of positive integers $$n$$ so that $$4 < \sqrt{n} < 10$$

Apr 14, 2019

#1
+2551
+3

Since $$\sqrt{n}$$ can be 5,6,7,8,9.

You sqaure the possible solutions to get 25,36,49,64,81.

These are the ONLY solutions because the problem said "positive integers"

So there are 5 possible solutions

Apr 14, 2019

#1
+2551
+3

Since $$\sqrt{n}$$ can be 5,6,7,8,9.

You sqaure the possible solutions to get 25,36,49,64,81.

These are the ONLY solutions because the problem said "positive integers"

So there are 5 possible solutions

CalculatorUser Apr 14, 2019
#2
+106519
+1

Very nice, CU  !!!!!

CPhill  Apr 14, 2019
#3
+200
0

Thanks CalculatorUser and CPhill!

Apr 14, 2019