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On a true-false test of 100 items, every question that is a multiple of 4 is true, and all others are false. If a student marks every item that is a multiple of 5 false and all others true, how many of the 100 items will be correctly answered?

 Jan 30, 2021
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If it is NOT a multiple of 4 and stud marks it 'false'   it is a correct answer    15 correct answers    5 incorrect

if it IS a multiple of 4 and stud marks it 'true' it is a correct answer     20 correct          

 

35 out of 100 correct   (I think !.....confusing, huh?)       

 Jan 30, 2021

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