The link below connects to a proof with an error in it. Identify the step(s) where the error occurs, and describe why the step(s) is/are wrong. Proof containing error Problem will require knowledge of set theory. I'm not sure this is the correct place to post this; it would have gone into rec.puz...

Please explain the logic. I am not trying to solve it using trial and error or using any software. I am just looking for the next step. This sudoku is from apple 'Sudoku King' app.

Make a square grid with an even side. Make a continuous trail which passes through all small squares; the trail ends where it started. Where there is an angle you can put a red or a blue tile. On the small squares with no tiles place connectors to ensure the continuity of the trail remains i...

1, 2, 16, 4, 16, 16, 52, ?, 52, 16, 52, ?, 40, 52, ? What are these question marks? a) 8, 16, 160 b) 16, 8, 190 c) 52, 16, 160 d) 8, 25, 90 e) Impossible to determine

It's question image plzz answer this question Very difficult question

Source : I created the question below while trying to find an answer to this question A, B and C are about to play a game. There are thirteen numbers from 1 to 13 . 'A' will choose 2 different numbers from these 13 numbers and tell them to B. B needs to then call out any one number from 1 to 13 b...

You see a scrawled message on your table: ....................!?.?...?.......?...............?....................?.?.?.?.!!?!.?.?.?!.................!.!!!!!!!!!!!!!!!!!!!!!!!!!!!...........!. Question: What is the 4-letter "word" hidden in this sentence? Hint 1:

The standard Masyu rules apply.

The sequence starts with the following: a1 = 1, a2 = 2, a3 = 5, a4 = 4, a5 = 6, a6 = 10, a7 = 9, a8 = 8, a9 = 21, a10 = 12, a11 = 13, a12 = 20, a13 = 33, a14 = 15, a15 = 42, a16 = 16, a17 = 19, a18 = 63, a19 = 34, a20 = 24, ... Identify the rule of this sequence and the next five terms. The same...

Vani meam has three Tatva books, one for chemistry, physics and biology. The chemistry book had 120 pages, the physics book has 10% more pages and the biology book has 10% fewer pages. In a class, she went through 2.5%, 25% and 50% of the pages in the chemistry, physics and blology books respecti...

Tommy has an automobile repair service, which caters to four-wheelers and two-wheelers. In the first week of April, Jimmy repaired 120 tyres and 58 engines. How many two-wheelers did he serve in that week? The 58 engines implies that 58 vehicles were repaired but should we consider that they were...

You are playing a game with dice. You have a grid with 13 cells shown below. A token starts in the left-most cell (start). Each turn you roll an $n$-sided die and get a number $x$ between $1$ and $n$, inclusive. If you can move the token $x$ cells to the right without going outside the grid then ...

Golam had a secret vault in a secret treasure land. To enter the magical vault, he has to enter a secret pin, which was made of four digits from 0 to 9. As time passed, Golam went to his secret vault lesser. And one fine day, when he went to the vault, he couldn't enter the vault. He realized tha...

In a large orchard, there are three kinds of bees, Bumblebees, Dumbbell bees, and Humble bees. 4 Dumbbell bees can carry as much nectar as 7 Humble bees. 3 Bumblebees can carry as much nectar as 2 Dumbbell bees and 1 Humble bee combined. If 7 Bumblebees, 15 Dumbbell bees, and 4 Humble bees each v...

In the kingdom of underwaters, there was a game that all the nymphs liked to play. In four chests, four different coins gold, Silver, Copper and Bronze were kept in the underwater fountains. One day, 123 nymphs came to play 'Guess what's in which box?' While all the 123 nymphs were done guessing,...

In four chests, four different coins gold, Silver, Copper and Bronze were kept in the underwater fountains. One day, 123 nymphs came to play 'Guess what's in which box?' While all the 123 nymphs were done guessing, the officials opened the box to check who all got what all correct. 43 nymphs coul...

Golam had a secret vault in a secret treasure land. To enter the magical vault, he has to enter a secret pin, which was made of four digits from 0 to 9. As time passed, Golam went to his secret vault lesser. And one fine day, when he went to the vault, he couldn't enter the vault. He realized tha...