One reservoir has four taps. Using the first takes two days to saturate the reservoir, the second tap three days, the third four days and the last one 6 hours. What time will it last to fill the reservoir using all 4 taps at once?

On every clock we can see that at noon the hour, minute and second hand correctly overlay. In about one hour and five minutes the minute and hour hand will overlay again. Can you calculate the exact time (to a millisecond), when it will occur and what angle they will contain with second hand?

If it were two hours later, it would be half as long until midnight as it would be if it were an hour later. What time is it now?

If I go half a way to the town at the speed of 30 km/hour, how fast do I have to go for the rest of the way to have the average speed of the entire way 60 km/hour?

Two trains 200 km from each other are moving at the speed of 50 km/hour to encounter. From one train a fly takes off, flying straight (upon the rails) to the other train at the speed of 75 km/hour, bounces away from it and flies back to the first train. This is repeated till the trains crash to each other and the fly is smashed. What distance is the fly able to fly until its judgement moment?

If I have 7 candles lit and they go out 2, how many candles do I have left?

If I have 7 candles lit and they go out 2, how many candles do I have left?

In a taxi there is... A pregnant lady~25 years old A construction worker~39 years old A random man~52 years old Driver~76 years old •Who is the youngest?

In a church there are 5 candles, at night 3 thieves and 2 thieves enter. Only thieves carry candles. How many candles are there?

A teacher is yelling, she closes the door, the window and a book but what did she forget to close?

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