# Autech Software and Design Interview Puzzle #1 - Popular Deductive Logic Problem

Difficulty Popularity

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

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 ?

# Autech Software and Design Interview Puzzle #2 - Crossing Bridge Brain Teaser

Difficulty Popularity

Four friends need to cross a dangerous bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

# Autech Software and Design Interview Puzzle #3 - Logic Coins Puzzle

Difficulty Popularity

Assuming i have an infinite supply of coins.

What is the fewest number of coins would be required in order to make sure each and every coin touched exactly three other coins.

Difficulty Popularity

You have a pair of unbiased dices. You throw them together till you get a sum of 4 or 7.

What is the probability that you get a sum of 4 before the sum of 7?

# Autech Software and Design Interview Puzzle #5 - Tricky Time Measure Puzzle

Difficulty Popularity

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

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