There are 500 packets in a large box and each packet contains 4 electronic devices in it. On testing, at the time of packing, it was noted that there are some faulty pieces in the packets. The data is as below :
|No. of faulty devices in a packet||Number of packets|
|Total number of packets||500|
If one packet is drawn from the box, what is the probability that all the four devices in the packet are without any fault?