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Aconex Interview Puzzle #1 - Time And Work Interview Problem

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There is a ground where the grass grows up with a uniform rate in length and thickness. If forty cows can eat whole of the grass in forty days and thirty cows can eat the whole grass in sixty days.

How much time will twenty guys take to eat whole of the grass ?

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Aconex Interview Puzzle #2 - Weighing Bar Problem

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The puzzle is if the shopkeeper can only place the weights in one side of the common balance.
For example: if shopkeeper has weights 1 and 3 then he can measure 1, 3 and 4 only.

Now the question is how many minimum weights and names the weights you will need to measure all weights from 1 to 1000.

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Aconex Interview Puzzle #3 - Cricket Riddle

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Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

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Aconex Interview Puzzle #4 - Popular Probability Brain Teaser

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Kangwa, Rafael and Ferdinand plans for gun fighting.
They each get a gun and take turns shooting at each other until only one person is left.

History suggest
Kangwa hits his shot 1/3 of the time, gets to shoot first.
Rafael, hits his shot 2/3 of the time, gets to shoot next if still living.
Ferdinand having perfect record at shooting(100% accuracy) shoots last , if alive.

The cycle repeats. If you are Kangwa, where should you shoot first for the highest chance of survival?

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Aconex Interview Puzzle #5 - Popular Deductive Logic Problem

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Eight Brothers lives in an old house where there is no electricity and no computers or any any other gadget.

Brother-1: Reading Comics
Brother-2: Playing Chess
Brother-3: Writing
Brother-4: making food for the family
Brother-5: sleeping and snoring
Brother-6: cleaning house
Brother-7: watering the plants


what is Brother-8 doing ?

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