Cindy's job is to check computer printers for defects. out of 420 printers she has to check, only 3 of the first 84 have been defective. using this information, what is the best prediction of the total number of printers in this group that will be defective?

ok

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omg what happend to your question? if you could edit this question i can

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answer: 72: 111

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answer:  

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odd numbers are only divisible by 1 and itself.

even numbers are divisible by more than 1 and itself.

for example 6 is even because it is divisible by more than 1 and its self. 1 x 6= 6 ; 2 x 3= 6

and 7 is odd because only 7 x 1 equals seveb