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$arr1[0][0] =

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$arr1[0][1] =

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Warning: Trying to access array offset on value of type null in /users/2019/i1919058/public_html/2022/WebProg/ch04/exam04-14.php on line 17
$arr1[1][0] =

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$arr1[1][1] =

$arr2[0][0] = 00
$arr2[0][1] = 01
$arr2[1][0] = 10
$arr2[1][1] = 11