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In the half yearly exam only 70% if the ...

In the half yearly exam only 70% if the students were passed. Out of these (passed in half yearly) only 60% student are passed in annual exam. Out of those who did not pass the half yearly exam, 80% passed in annual exam. What per cent of the students passed the annual exam ?

A

0.42

B

0.56

C

0.66

D

none of these

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The correct Answer is:
C
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