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  2. Missing dollar riddle - Wikipedia

    en.wikipedia.org/wiki/Missing_dollar_riddle

    There seems to be a discrepancy, as there cannot be two answers ($29 and $30) to the math problem. On the one hand it is true that the $25 in the register, the $3 returned to the guests, and the $2 kept by the bellhop add up to $30, but on the other hand, the $27 paid by the guests and the $2 kept by the bellhop add up to only $29.

  3. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    The power of 3 multiplying a is independent of the value of a; it depends only on the behavior of b. This allows one to predict that certain forms of numbers will always lead to a smaller number after a certain number of iterations: for example, 4a + 1 becomes 3a + 1 after two applications of f and 16a + 3 becomes 9a + 2 after four applications ...

  4. Only 3% Of Adults Can Actually Solve All Of These Math ...

    www.aol.com/lifestyle/ever-said-ever-back-school...

    Only 3% Of Adults Can Actually Solve All Of These Math Problems – Check If You Are One Of Them. Julija B. November 25, 2024 at 4:16 AM

  5. Three cups problem - Wikipedia

    en.wikipedia.org/wiki/Three_cups_problem

    The problem is insolvable because any move changes by an even number. Since a move inverts two cups and each inversion changes W {\displaystyle W} by + 1 {\displaystyle +1} (if the cup was the right way up) or − 1 {\displaystyle -1} (otherwise), a move changes W {\displaystyle W} by the sum of two odd numbers, which is even, completing the proof.

  6. Three utilities problem - Wikipedia

    en.wikipedia.org/wiki/Three_utilities_problem

    It is the smallest example of a nonplanar Laman graph. [23] Despite being a minimally rigid graph, it has non-rigid embeddings with special placements for its vertices. [ 9 ] [ 24 ] For general-position embeddings, a polynomial equation describing all possible placements with the same edge lengths has degree 16, meaning that in general there ...

  7. Coin problem - Wikipedia

    en.wikipedia.org/wiki/Coin_problem

    Only lines with n = 1 or 3 have no points (red). In mathematics, the coin problem (also referred to as the Frobenius coin problem or Frobenius problem, after the mathematician Ferdinand Frobenius) is a mathematical problem that asks for the largest monetary amount that cannot be obtained using only coins of specified denominations. [1]

  8. Hundred Fowls Problem - Wikipedia

    en.wikipedia.org/wiki/Hundred_Fowls_Problem

    The Hundred Fowls Problem is a problem first discussed in the fifth century CE Chinese mathematics text Zhang Qiujian suanjing (The Mathematical Classic of Zhang Qiujian), a book of mathematical problems written by Zhang Qiujian. It is one of the best known examples of indeterminate problems in the early history of mathematics. [1]

  9. 100 prisoners problem - Wikipedia

    en.wikipedia.org/wiki/100_prisoners_problem

    The 100 prisoners problem is a mathematical problem in probability theory and combinatorics. In this problem, 100 numbered prisoners must find their own numbers in one of 100 drawers in order to survive. The rules state that each prisoner may open only 50 drawers and cannot communicate with other prisoners.