Interactive practice questions
$3\times0$3×0
Easy
< 1min
$0\times3$0×3
Easy
< 1min
$3\times1$3×1
Easy
< 1min
$1\times3$1×3
Easy
< 1min
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$3\times0$3×0
$0\times3$0×3
$3\times1$3×1
$1\times3$1×3