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Consider the following program code: $var -10; package Alpha; $var -20; { package Beta; $var = 30; } package Gamma; $var = 40; { print $var; } What is the output of this code?

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Consider the following program code: $var -10; package Alpha; $var -20; { package Beta; $var = 30; } package Gamma; $var = 40; { print $var; } What is the output of this code?






 
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