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Use Venn-diagram to examine the validity...

Use Venn-diagram to examine the validity of the following arguments :
(i) `S_(1)` : Natural numbers are integers
`S_(2)` : x is an integer
S: x is a natural number.
(ii) ` S_(1)`: Natural numbers are integers.
`S_(2)` : x is an interger.
S : x is not a natural number.

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