Online Test for software testers

Here is our online Interview Questions - Brain Teasers for Software Testers:

Different definitions of brain teasers (brain-twister);
1. a difficult problem
2. a difficult question or problem that you try to solve for fun [Macmillan dictionary]
3. something (as a puzzle) that demands mental effort and acuity for its solution []
4. a problem or puzzle, typically one designed to be solved for amusement.[]

I have heard that Microsoft has some policies banning brainteaser questions during an interview. Perhaps because of this, there are so many jokes about Microsoft quality.

In 1997 in Toronto, Canada there were very popular interview questions that can be categorized as brainteasers.
  • How do you test a chair?
  • How do you test a window frame?
  • How do you test a paper clip?
  • How do you test a pencil?

    I know that IBM Canada, in 2005, had an online test for a permanent position that included many brainteaser questions. Unfortunately, many companies have moved to the incorrect assumption that everyone can do the actual testing. But in some companies that really care about quality, there are questions during the interview that can be called brainteasers.

    Simple warm-up questions:
  • In our team, everyone shook hands with all members. There are 10 testers in the team. How many handshakes were in the team? N x (n -1)/2 = 45
  • How many eggs can you put in an empty basket?
  • On the sheet of paper, the "equality" XI + I = X is lined with matches. How would you make it true, without touching any of the matches or cutting the paper? Matches cannot be set on fire, moved, added, removed, broken, etc. You cannot use additional items.
  • In the room there were 50 candles and they were all burning, then 20 of them were put out. How many candles remain in the room?
    The following is a classic example of a math interview question that is related to software testing:
    math interview question

    The board above represents a true mathematical identity, but one pixel is broken. Which one?

    Are you ready to write good software testing documentation, business requirements or functional specification?
    A quiz for people who want to became a technical writer.

  • There are 14 punctuation marks in English grammar.
    Can you name at least half of them?
  • Name 6 or more things that you can wear on your feet beginning with the letter 'S.'
  • Answers To Quiz:
    (Scroll down)

  • Fourteen punctuation marks in English grammar:
    Period, comma, colon, semicolon, dash, hyphen, apostrophe,question mark, exclamation point, quotation mark, brackets, parenthesis, braces, and ellipses.
  • Six or more things you can wear on your feet beginning with 'S':
    Shoes, socks, sandals, sneakers, slippers, skis, skates, snowshoes, stockings, stilts.

    Solve a problem: Growing Water-Lily

    In the middle of a round pool lies a beautiful water-lily. The water-lily doubles in size every day. After exactly 20 days the complete pool will be covered by the lily.

    The Question: After how many days will half of the pool be covered by the water-lily, if the pool diameter is 20 meters?

    Test your math knowledge and logic. Validate the following: math logic interview question
    The Question:
    what are two four letter words that are offensive to tester, unless they are used together?
    'don't' and 'stop'
    System requires eight-character passwords using upper- and lowercase letters and numbers. Business wants to go from 8 to 10 characters.
    Question: How many times more passwords will be possible?
    With what speed should the cat move so that it wonít hear the sound of a tin can thatís tied to its tail?
    The author hopes that users wonít try to find answer to this question experimentally.
    Clue: Boundary values testing

    The correct answer is - the speed must be equal to zero. The cat must stand still (and not wag its tail).
    The second boundary value is - the speed of sound or greater.

    Question: How do you divide four boiled potatoes among five people?
    Answer: Make mashed potatoes first.

    Question: After the invention of metal military helmets, the number of head injuries increased dramatically by as much as 10 times. Guess what was the reason?
    Correct answer: Before the using helmets, most head injuries resulted in death. They were therefore classified as dead, not injured.

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    © January 2006 Alex Samurin and © 2009