Oracle Interview Puzzles

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There are three bags.The first bag has two blue rocks. The second bag has two red rocks. The third bag has a blue and a red rock. All bags are labeled but all labels are wrong.You are allowed to open one bag, pick one rock at random, see its color and put it back into the bag, without seeing the color of the other rock.
How many such operations are necessary to correctly label the bags ?
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You can see a Swiss Cross in the attached picture. You can draw one on a sheet of paper. Now you have to draw two straight lines on that paper and cut along with those lines. After cutting, you must have four congruent pieces and also, you must be able to join them to make a square.
Can you do it?
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In the photo attached with this question, you have to place the numbers from 1 to 19 in the circles such that if we add up any side of the triangle, the sum is 17.
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The day before yesterday Mr Puzzle was 17. Next year he will be 20. How can that be the case?
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In a dream, I was travelling in a country where they had strange ways of doing things. One little incident was fresh in my memory when I awakened. I saw a clock and announced the time as it appeared to be indicated, but my guide corrected me.
He said, “You are apparently not aware that the minute hand always moves in the opposite direction to the hour hand. Except for this improvement, our clocks are precisely the same as. those you have been accustomed to.” Since the hands were exactly together between the hours of four and five o clock, and they started together at noon, what is the real time?View SolutionSubmit Solution 3791 views
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