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i am entering right answer but some how it showing me worng asnwer. i think i am having problem in formet. could any one show me sample formate in which we have to write answer?
Use plain text
plaintext is also not working
it is asking you the answer of similar element in A AND B
i too dont know..anyone an please explain..
Answer is '5'
Because the elements of A U B are 2,3,4,5,6.
The count would be 5.
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I simply used the below code
it worked fine
select count(*) from (select * from a intersect select * from b) as m