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     EduGorilla 
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    There are three switches A, B and C which can be in ON/OFF position. Their settings change as per the following rules.

    (i) If A is the only switch as ON, change B to ON.
    (ii) If A and B are only switches as ON, change C to ON.
    (iii) If all three switches are ON, change C to OFF.
    (iv) For all other situations, all switches in ON are changed to OFF and all switches in OFF are changed to ON.

    If only B is ON in the changed setting, which of the following could have been the original setting?

    Options :-

    1. A ON, B ON, C ON
    2. A ON, B OFF, C ON
    3. A OFF, B ON, C OFF
    4. A OFF, B OFF, C ON
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