Get dealt 6 randomly numbered card, use the symbols to make the first 5 equal the 6th, simply as that.
Oh, wait, you do have a time limit and there are 3 practice level and 1 Championship level. Each practice level gets a little harder as you progress. On the Easy & Medium practice modes there is even a Hint button available (if you get stuck). And if you cannot find the correct answer there is also a Solve button (after time runs out of course) for you to see one of the correct answers. (Not available in Championship Mode - No help, hey it is the Championship after all!!!!)