They were outnumbered, but still win within 6 Days. Had few Casualties while their Enemy had 10 times more Casualties. How did they done it?
Your question was answered [here] (https://www.reddit.com/r/AskHistorians/comments/vgg8o/why_was_the_6_day_war_so_unilateral/?st=JBR73ZQ0&sh=fe8c1c1e) in depth by /u/Bernardito and some other users.
If you have further questions, ask away!