Design and Do IX
This challenge contains 10 logic and reason items.

81. This equilateral triangle is composed of six matchsticks. Can you rearrange the matchsticks to form eight equilateral triangles without breaking or bending any of them?

When you have a solution and want to verify it, click [CHECK].


82. Based on the harbor diagram of Portus Augustī and the following information, match the name of each ship at anchor with its berth, the kind of vessel it is, and the name of the captain.

Portus harbor

  • Captain Agrippa's liburna is next to the "Castor & Pollux."
  • The ship in berth C is commanded by captain Duilius.
  • The tabellāria is anchored next to and north of the actuāria, whose captain is not named Cornelius.
  • The "Triton" is anchored next south of Captain Ennius's vessel; the trirēmis is anchored next south of the "Isis."
  • The ship in berth D is a frumentāria, unloading a wheat supply after crossing from Egypt.
  • Captain Brutus's "Neptune" is anchored two berths south of the corbīta.
  • The ship in berth B is named the "Pole Star."
  • Captain Fabius's vessel has a one-word name and is next to the "Dolphin."

    When you have a solution and want to verify it, click [CHECK].


    83. If the left-hand coin is rolled around the top of the right-hand coin, which way would the head be facing in its new position: left, right, up, or down?

    When you have a solution and want to verify it, click [CHECK].


    84. Can you connect all the dots with just four straight lines without lifting your pencil from the paper or retracing any lines?

    When you have a solution and want to verify it, click [CHECK].


    85. When Véronique returned from shopping in the macellum, she realized that a merchant had given her extra coins in her change as a donativum. Her purchases totaled two and a quarter sestertii, and she received ten asses in change from a denarius. At the time of her purchases, 1 gold aureus = 25 silver denarii = 100 brass sestertii = 400 bronze asses.

    How much did she receive as a gratuity? What percentage of her purchase was it?

    When you have a solution and want to verify it, click [CHECK].


    86. If each large ball weighs one and a third times the weight of each small ball, what is the minimum number of adjustments that will make the scales balance?

    When you have a solution and want to verify it, click [CHECK].


    87. Prior to a meeting of the Senate, Gaius Perplexus challenged the assembly with this proposal: "I'll give an amphora of wine to the first citizen who can answer this question correctly."

     
     

    Seriously, which weighs more, a
    pound of feathers or a pound of gold?




    When you have a solution and want to verify it, click [CHECK].


    88. Start at the center of the grid and work your way to one of the corners by tracing the phrase "Io Saturnalia Io!" How many different pathways are there? What figure do you detect within the grid?


    When you have a solution and want to verify it, click [CHECK].


    sudoku89. A curious puzzle from the East called sudoku has been brought to Rome. Each row and column should contain one of each of the Roman numerals I-VI. In addition, each of the shapes marked by thicker lines should also contain the Roman numerals I-VI. Are you able to solve this Roman sudoku?

    When you have a solution and want to verify it, click [CHECK].


    90. Tignarius is an ingenious carpenter . He was able to cut this curved shape into three pieces that fit together to form a perfect square. Can you figure out his plan?

    When you have a solution and want to verify it, click [CHECK].

  • [ Design and Do I ] [ Design and Do II ] [ Design and Do III ] [ Design and Do IV ]
    [ Design and Do V ] [ Design and Do VI ] [ Design and Do VII ] [ Design and Do VIII ]
    [ Design and Do X ] [ Design and Do XI ]