When more than one card is Predicted, the Predicting player looks at that many cards and Recycles any number of them before putting the rest back on top of their Main Deck in any order.
§ 436.1.a Core Rules PDF (officieel)
§ 436 Predict
§ 436.1 Predicting a card is the act of looking at a single card from the top of the Main Deck and choosing whether or not to Recycle it.