Resolving the relationship riddle

Can you solve these six ingenious logic puzzles?

resolving the relationship riddle

We at Bright Side have brought you several riddles to train your brain and check your ability to cope with stress. Maybe you'll never have to answer them in real. Resolving the Relationship Riddle Workshop. Everything that irritates us about others can lead us to an understanding of ourselves. Carl Jung. This workshop is . See How Smart You Are And Solve These 15 Impossible Brain Teasers Braingle, a brain teaser website, shared its most challenging riddles with us, you know that 10 > X + Y. When Rex realized this relation he smiled.

Every item is matched to one, and only one, other item in each category, and no two items in a category will ever be matched to the same item in another category.

Your goal is to figure out each item's matches, using just the clues given and pure logical deduction. Notice how the last two categories pink and blue are repeated on both the top and left sides. All logic puzzle grids will follow this same pattern. The point of the logic grid is to determine whether any given item is or is not matched with any other given item.

This configuration of categories allows every single item on the grid to intersect with every other item on the grid once, and only once. In this example there are five items for every category - i.

Each subgrid will always be a square that is outlined in a slightly heavier black line. In this example, the yellow subgrid at the top-left is the Prices-Names subgrid, because it is where the Prices category and the Names category intersects. There are six subgrids total in this sample puzzle. Each column and row travels across the full-width or full-height of the grid at that point heights and widths will vary depending on the category.

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A sub-section of a column or row that is housed entirely within a single subgrid is referred to as either a sub-column pink or a sub-row blue. The smallest squares on the grid, where individual items intersect, are called boxes purple.

If the sides balance let's call this Case 1all eight of those coins are real and the fake must be in the other pile of four. Mark the legitimate coins with a zero circle using your marker, take three of them, and weigh against three of the remaining unmarked coins.

If they balance, the remaining unmarked coin is counterfeit. If they don't, make a different mark the video above suggests a plus sign for heavier, minus for lighter on the three new coins on the scale. Test two of these coins on the scale one on each side —if they have plus marks, the heavier of those tested will be the fake.

If they have minus marks, the lighter is the fake. If they balance, the coin not tested is the fake. For Case 2, check out the video. The total vertical height of the escalator is 20 feet. The escalator moves upward one half step per second. If I step on the lowest step at the moment it is level with the lower floor, and run up at a rate of one step per second, how many steps do I take to reach the upper floor?

Do not include the steps taken to step on and off the escalator. To understand the math, take a period of two seconds. Within that two seconds, I run up two steps on my own power, and the escalator lifts me the height of an extra step, for a total of three steps—this could also be expressed as 3 times 8 inches, or two feet. Therefore, over 20 seconds I reach the upper floor having taken 20 steps.

A raft is available, which can carry a maximum of two animals at a time and needs at least one animal onboard to row it across. If the lions ever outnumber the wildebeest on either side of the river including the animals in the boat if it's on that sidethe lions will eat the wildebeest. Given these rules, how can all the animals make the crossing and survive?

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There are two optimal solutions. Let's take one solution first. In the first crossing, one of each animal goes from east to west. In the second crossing, one wildebeest returns from west to east. Then on the third crossing, two lions cross from east to west. One lion returns west to east. On crossing five, two wildebeest cross from east to west.

On crossing six, one lion and one wildebeest return from west to east. On crossing seven, two wildebeest go from east to west.

resolving the relationship riddle

Now all three wildebeest are on the west bank, and the sole lion on the west bank rafts back to the east. From there crossings eight through elevenlions simply ferry back and forth, until all the animals make it. For the other solution, consult the video.

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One watch is broken and doesn't run at all. One runs slow, losing one minute every day. The final watch runs fast, gaining one minute every day. After being marooned for a moment, I begin to worry about timekeeping. Which watch is most likely to show the correct time if I glance at the watches at any particular moment?

Which would be least likely to show the correct time? We know that the stopped watch must tell the correct time twice a day—every 12 hours. The watch that loses one minute per day will not show the correct time until days into its cycle of time loss 60 minutes in an hour times 12 hourswhen it will momentarily be exactly 12 hours behind schedule. Similarly, the watch that gains one minute a day is also wrong until days after its journey into incorrectness, when it will be 12 hours ahead of schedule.

Because of this, the watch that doesn't run at all is most likely to show the correct time. The other two are equally likely to be incorrect. In the case of the video below, a fish has been kidnapped. There are five identical-looking houses in a row numbered one through fiveand one of them contains the fish. Watch the video for the various bits of information about the occupants of each house, the rules for deducing new information, and figure out where that fish is hiding!

You really need to watch the video to understand this one, and the list of clues is helpful too. The fish is in House 4, where the German lives. They spend a day collecting a large pile of bananas, numbering between 50 and The castaways agree that the next morning the three of them will divide up the bananas equally among them.

During the night, one of the castaways wakes up. He fears that the others might cheat him, so he takes his one-third share and hides it. Since there is one banana more than a quantity which could be divided equally into thirds, he gives the extra banana to the monkey and goes back to sleep.

resolving the relationship riddle

Later in the night, a second castaway awakes and repeats the same behavior, plagued by the same fear. Again, he takes one-third of the bananas in the pile and again the quantity is one greater than would allow an even split into thirds, so he hands the extra banana to the monkey and hides his share. Still later, the final castaway gets up and repeats the exact same procedure, unaware that the other two have already done it.

Yet again, he takes a third of the bananas and ends up with one extra, which he gives to the monkey. The monkey is most pleased.

resolving the relationship riddle

When the castaways meet in the morning to divide the banana loot, they all see that the pile has shrunk considerably, but say nothing—they're each afraid of admitting their nighttime banana thievery. They divide the remaining bananas three ways, and end up with one extra for the monkey.

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Given all this, how many bananas were there in the original pile? There are no fractional bananas in this problem. We are always dealing with whole bananas. Note that if the pile were bigger, the next possible number that would meet the criteria above would be —but that's outside the scope listed in the second sentence "between 50 and " of the puzzle. The lab is a single story building, built as a 4x4 grid of rooms, for a total of 16 rooms—15 of which are contaminated.

The entrance room is still safe. There's an entrance at the northwest corner and an exit at the southeast corner.

resolving the relationship riddle

Only the entrance and exit rooms are connected to the outside. Each room is connected to its adjacent rooms by airlocks. Once you enter a contaminated room, you must pull a self-destruct switch, which destroys the room and the virus within it—as soon as you leave for the next room. You cannot re-enter a room after its switch has been activated.