One should be able to remember about _____ percent of meaningful material after three years, and about _____ percent after 20 years.
A)30; 30
B)50; 30
C)70; 30
D)70; 70

Question

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The Answer of One should be able to remember about _____ percent of meaningful material after three years, and about _____ percent after 20 years.
A)30; 30
B)50; 30
C)70; 30
D)70; 70

One Should Be Able to Remember About _____ Percent of Meaningful