Abstract: Unlocking the mystery of wave-particle duality is a compelling topic in modern physics. Instead of using the concept of probability, an explanation that can both speak out the individual events and interpret how they are together to construct wavelike complexities is always expected. In this paper, four specific examples are given to show that individual deterministic events are indeed able to build up collective interferences in our macroscopic world. In the first three examples, the collective behaviours appear due to two factors: one is the signals with varying intensities associated with the individual events; the other the involvement of the detector screen to receive the signals. The representative number of an event ( that is the intensity of the signal associated the event) stops changing and is shown to be a definite value to the observer when the signal hits the detector screen. Regarding the fourth example, the collective behaviours are formed due to the employment of decimal system to measure the events.
Keywords: wave-particle duality, collective interference, representative number, individual deterministic event, decimal system, macroscopic world