Two marks exercise problems IV — task. Mathematics State Board, Class 10.

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The Cartesian product

$A \times A$ has

$9$ elements among which

$(- 1, 0)$ and

$(0, 1)$ are found. Find

(i). The set

$A$ :

$\{- i, i, i\}$

[Note: Enter the numbers in the order of the coordinates in pairs.]

(ii). The remaining elements of

$A \times A$ :

$\huge\{$

$\huge\}$

[Note: Enter the first and second coordinates of the ordered pair in the increasing order.]

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8. Two marks exercise problems IV