A résolu

Number Puzzles - 017

plus de 4 ans il y a

A résolu

Number Puzzles - 016

plus de 4 ans il y a

A résolu

Number Puzzles - 015

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Number Puzzle - 023

plus de 4 ans il y a

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Number Puzzle - 052

plus de 4 ans il y a

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Number Puzzle - 096

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Number Puzzle - 094
Give an example of three unique numbers a, b, and c such that concatenating a^2, b^2, and c^2 is equal to d^4 for an integer d.

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Number Puzzle - 100

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Number Puzzle - 093

presque 5 ans il y a

A résolu

Number Puzzle - 074

presque 5 ans il y a

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Number Puzzle - 024

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Number Puzzles - 012

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Number Puzzle - 042

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Number Puzzles - 019
Borrowing the idea from Pascal Triangle, the following operation can be performed. Starting with an array of numbers from 1 to N...

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Number Puzzle - 073

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Number Puzzle - 038

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Number Puzzles - 004
Give an example of three distinct numbers greater than 10 whose both product and sum are palindromes. The answer is not unique a...

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Number Puzzles - 003
Find six non-zero integers a, b, c, d, e, and f which satisfy the following equations: All six integers must be different. Th...

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Number Puzzles - 001

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Number Puzzles - 002

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Area of Cylindrical Shell
Consider a cylinder with a non-zero thickness with an inner radius of r1 and an outer radius of r2. If the height of the cylinde...

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Filter British English into American English
Given a sentence written with British spelling, return the sentence with the offending word(s) replaced with the American spelli...

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Find the solution of algebraic equation
Find the solution of algebraic equation of the form an*x^n + a(n-1)*x^(n-1) + (an-2)*x^(n-2)+...... a2*x^2 + a1*x^1 + a0 = 0; ...

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A résolu

With apologies to William Blake
Coder Coder, typing fast Sitting at your desk, aghast. What immortal MATLAB script will solve this problem, nice and qu...

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Largest Geometric Series
Extension of Ned Gulley's wonderful <http://www.mathworks.com/matlabcentral/cody/problems/317 Problem 317>. In a geometric se...

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Find similar sequences
Another problem inspired by a question on the <http://www.mathworks.com/matlabcentral/answers answers> forum. Given a matrix ...

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Create a matrix map of increasing safety levels
The sole nuclear power plant at Grid City suddenly had a meltdown. Luckily, the plant was designed to be in full automation, so ...

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Count the number of folds needed to pack a large sheet
In a certain paper factory, large sheets of paper are being made every day. Before sending the sheets for shipment, they have to...

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Calculate the sphericity of a Raschig ring
Sphericity is a measure of the roundness of any particle. It was defined by Wadell in 1935 as the ratio of the 'surface area of ...

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N-th permutation.
Let write some permutations of positive integers. 1: 1 2 3 4 5 6 ... 2: 2 1 3 4 ... 3: 1 3 2 4 ... ...

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