Ebbinghaus found that he could remember percent of a list of nonsense syllables an hour after learning the list perfectly, percent a day later, and percent a week later.

44,35,21

Explanation:

It can be realized that information memorized tends to depreciate memory value in the human brain over a longer period of time. What a student reads or learnt in school will tend to loose memory value the longer he last came across what he studied unless they revise what they learnt or repeat what they read.

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modern american cars are not available due to trade restrictions

the arab empire adopted the muslim religion as their main belief. arabs would influence the people from the territories they invaded towards islam (the muslim belief).

nevertheless, throughout the history of the arab empire, rulers brought intellectual individuals from other religions to their centers of learning. these other foreigners included jews, christians, greeks, persians, and indians.   these resulted in the adoption of important knowledge developed by these cultures by the arabic empire. for example, the works of aristotle were translated from greek to arab and indian scientists brought the numerical concept of "zero" to the arabs.

nowadays, 93% of the arab population is muslim, which at the same time is subdivided in sects including the sunni, zaini, alawi, shia. the remaining 7% is composed mainly of christians.