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Find the missing numbers.
Total *N* numbers are in the series of natural numbers ( *1,2,3,...,N* ). The input is an array (unsorted) of those natural num...

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Count integers in randomized vector that are multiples of a given number.
The mod() function We might all remember the days when we were taught to divide and then set the remainder aside if the numbers...

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find powers of two
find the unique, non-repeating, powers of 2 that sum to a given non-zero integer, n example: n = 23 result = [1 2 4 16] ...

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Find the first occurence of a given gap between two consecutive prime numbers
Problem statement Given a gap = p' - p between the two consecutive prime numbers p and p', find its first occurence, f. E...

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List primes which are the sum of two consecutive lower primes plus minus one
Problem statement Some prime numbers can be written as the sum of two consecutive lower primes plus / minus one : Like t...

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Check p = 4n +/- 1, the generic formula for odd prime numbers
Problem statement For all odd prime number p, there exists a positive integer n, such that p = 4n +/- 1 : Check this f...

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Check p = 6n +/- 1, the generic formula for odd prime numbers greater than 3
Problem statement For all odd prime number p greater than 3, there exists a positive integer n, such that p = 6n +/- 1 : ...

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Find 0 in array
Given array find where there 0 is.

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Calculate the sum of two polynomials
Calculate the sum of two polynomials if they are written in notation with their coefficients. example: () + () = a=[3 4 ...

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Equal temperament - musical notes and frequency
Starting from 440Hz note (musical note A above middle C), create 13 notes, using twelve-tone equal temperament, in Herz units. ...

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Count the ways to write 1/n as the sum of two unit fractions
The number 1/2 can be written as 1/3+1/6 and 1/4+1/4, and the number 1/9 can be written as 1/18+1/18, 1/12+1/36, and 1/10+1/90. ...

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Sum of a geometric series
Give the sum of the first 'n' terms of a geometric series, given 'a' as the first term and 'r' as the ratio.

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Say type of roots in quadratic equation
Given the coefficients of a quadratic equation, write a function that gives the output y='RealDifferent' if the roots are real a...

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Basic Quadratic Equation
Create the equation: y=(3x)^2+(5x)+35 and compute y for various values of x

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Quadratic equation
given three inputs (a, b, c) for the equation a*x^2+b*x+c=0; return 1 if the roots are complex (non zero imaginary), and 0 if th...

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Finding two missing number in 1 to n array
You are given an array of numbers from 1 to n with two missing numbers. Return the two missing numbers. Input: x=[5 2 0 1 ...

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¡Busca el extremo!
Crea una función que calcule el extremo de una parábola (máximo o mínimo absoluto) cuyos datos son proporcionados por el usuario...

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X plus binary inverted x
Given a n-bits number x, what is the sum of x to the binary inverted version of x? (this might be more simple than you think :-)...

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Second smallest number
What is the second smallest number in x? example: x = [1 2 3 4 5 6 7 8 9] y = 2

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Calculate the volume of the football

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Minimum Maximum Sort Array
sort one array by put minimum value followed by maximum as follow a=[2 3 1 5] and the solution is y=[1 5 2 3 3 2 5 1];

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How to permute given 3d matrix?
A(:,:,1)=[1 3] A(:,:,2)=[2 2] A(:,:,3)=[4 3] Change rows to columns and columns to rows, similar to transpose. Resul...

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Previous Palindrome

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Add Me To Death (Sum sum sum)
Given certain vector, sum of the input vector, get the sum of 2 adjacent numbers in the input, and sum of the output vector (wh...

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Primes Checker
Given variable inputs Check if they are prime numbers

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Avengers Assemble!
Given matrix with so many zeroes, trim those zeroes and output a matrix joining all nnz elements Example: input = [0 0 0 0 0; 0...

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Create Truth Table of Size according to input
Create a Truth Table Example: n = 3 output = [0 0 0; 0 0 1; 0 1 0; 0 1 1; 1 0 0; 1 0 1; 1 1 0; 1 1 1]

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Concatenated roots
Which is the value of this infinte concatenated roots? <<https://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif>> Note: If ...

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Compound interest - number e
A moneylender wants to receive his annual interest of 12% more frequently. If he receives his interest rate every six months,...

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Isothermal Expansion
Given the initial pressure and volume of an ideal gas, calculate the new volume, given the new pressure. Hint: <https://en.wi...

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