The green light only ever goes on when tank A is full and tank C isn't empty. The red light is always on unless either tank A isn't Full or tank B is empty. Given that the green light is on, we can conclude all of the following EXCEPT---

A Tank A cannot be empty
B The red light must be on
C Tank C cannot be empty
D we don't have enough information to determine whether tank B is empty or not

Correct Answer: The red light must be on

Bissoy MCQ
#মানসিক দক্ষতা #Dhaka Bank Ltd #Dhaka Bank Ltd - MTO - 10.07.2009

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