ok, i'm sorry for my mistake, i only tried to explain it in a pseudocode manner.

so,

e.g: ado is that array of records.

randomize;
cycle//this can be a while, repeat,ect. you must think until when this cycle is going.
put_question: ado[random(i)+a_value]
end_of_cycle

hope that now is more obvious

best regards,