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Question

I am facing duplicate content issue. I want know about the best solution to removing duplicates
We have 19 education levels which are attached with 200 categories please see following URLs. 19*200 = 3800 URLs e.g:
1. /abc/education-8-class. 1. /cds/education-8-class
2. /abc/education-9-class. 2. /cds/education-9-class
3. /abc/education-10-class. 3. /cds/education-10-class
4. /abc/education-11-class. 4. /cds/education-11-class
5. /abc/education-12-class. 5 /cds/education-12-class
6. …………….. ………………………
7. ……………. ……………
But for above URLs, same content is rendering. I want to remove all class level which is no more useful e.g (-8-class) from URLs
And I want to keep correct URL 1. /abc/education, 2. /cds/education
Now my actual URLs will be 200.
I am not able to select which method will be good from SEO point of view.
1.404
2.301 redirects
3. Canonical Tag
Or any others please suggest me

Search Engine Optimization (SEO)

Answer

Daniel Arroyo answered

I would do 301 redirects for the unwanted urls for a couple of months and then 404 then. This would require more work but it'll give you less impact in search ranking and traffic.

404 is too bad for SEO but it might impact your traffic.