Question

Given below is a very interesting maths problem.
This was set out by a German. It is a little difficult and can help prevent Alzheimer disease.

2  +  2  +  2  =  6
3      3       3  =  6
4      4       4  =  6
5      5       5  =  6
6      6       6  =  6
7      7       7  =  6
8      8       8  =  6
9      9       9  =  6

Use any of mathematical signs wherever you need.

Solving 1 line... 
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Go ahead and get your mind busy. I am sure there are lots of PhDs in this group​

Answer 1

AnSwEr:::::

1. $2+2+2=6$

2. $3×3-3=6$

3. $\sqrt{4} +\sqrt{4} +\sqrt {4} =6$

4. $5÷5+5=6$

5. $6×6÷6=6$

6. $7-(7÷7)=6$

7. $8-\sqrt{(\sqrt{8+8})}=6$

8. $\sqrt{9} ×\sqrt{9}-\sqrt{9}=6$