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ARCO DS qn

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Source: — Data Sufficiency |
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by sumithshah » Mon Sep 08, 2008 8:39 pm
imo - I thought it was C but upon solving it once again, its clear that it is e
Last edited by sumithshah on Mon Sep 08, 2008 10:30 pm, edited 1 time in total.
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by Vignesh.4384 » Mon Sep 08, 2008 9:36 pm
IMO E
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by Aspirant008 » Mon Sep 08, 2008 10:21 pm
suppose 10000 items.
A insuff.. 10 r diefective.. not 100 percent sure

b insuff 1/10 of defective are defective, but we dont know how many are def ???


with both a and b we can answer c suff..
suppose 10000 items.
10 r diefective..
again 1/10th of 10 are missed by inspectors so 1 is again def

rgds,
Arshad
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by bharathaitha » Wed Sep 10, 2008 6:11 am
The answer is B.

Here we need to calculate the fraction. So we dont need the exact number. B clearly says 1/1000 are defective that means 1/1000 fraction of the items produced are detective.
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