Calling srand() sets up the seed for the random number generator. Calling rand() then returns a random number in the sequence denoted by the seed.

srand 10;  $x = rand;
srand 10;  $y = rand;
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In that code, $x and $y will hold the same value. That is why YOUR code produces 11 identical values. Specifically, it runs so fast that time() never changes.

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Jeff[japhy]Pinyan: Perl, regex, and perl hacker.
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;