Write a pascal program that displays all even numbers from 20 to 40

program num;

i: integer;

for i: = 20 to 40 do
if i mod 2 = 0 then writeln (i); // check the evenness of the number by calculating the remainder of an integer division – mod operation: if the remainder of dividing the specified number by 2 is 0, then this number is even.

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