Yekangi

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About Yekangi

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    Look at the question carefully: the instructor asks the student to put anything he wants into the flasks, and then he tests them for acidity. Put in another way, all the four flasks would be taken away by the instructor and tested for acidity, and the student is just given the results; with the results the student should point out the acid pot. I don't think you will pass, let alone get an A, if you say, after the first test, "Hold on dude, let me try this other combination"...
    There's thus no scope for the trial-and-error method...
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    @ Katybug,

    Please use the Spoiler option while posting the answer: that way more members will give the 'feedback' which, as brookspuzzel pointed out, is a most welcome phenomenon.

    @ brookspuzzel,

    I see that Ismither's logic is perfect. Any comments?
    And by the way, I request you to please check out my previous post in this thread.
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