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find radius of cone
if Slant height of Cone(I)& hight of Cone(H) given then find radius of the Cone(R) for example I=5,h=4 then the ans R=3;

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Is it an Armstrong number?
An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. Fo...

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Best Fit RMS
Given a set of data as x and y, find the <http://en.wikipedia.org/wiki/Root_mean_square RMS> value between the data and its best...

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Complex transpose
Calculate the transpose of a matrix having complex numbers as its elements without changing the signs of the imaginary part. ...

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Matrix to column conversion
Given a matrix of any size, convert it into a column vector. e.g A=[10 20 30; 40 50 60] then, B = [10; 40; ...

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Celsius to Kelvin
Convert Celsius degrees to Kelvin temperature.

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Genome decoding
Inspired by a question on the answer forum: You are given a matrix of 8-bit integers which encodes a genome. Each integer can...

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Vector LCM
Find Least Common Multiple of a given vector. Need general solution as the test suite will be expanded. Function Template: fu...

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peta to nano (x-ray)
for certain x-ray radiation, given frequency in petahertz, give wavelength in nanometer, must be accurate +/- 25%

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give-nth-decimal-place-of-pi up to 100 digits
max 100th place after the decimal point this is upgrade problem of 142

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Given area find sides
In a right angle triangle given area 'A' one arm=x, another arm=2x then find the value of x. For example, area A=400 then ...

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Deleting an element in a matrix
For vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix Grades=[98 56 34 100 88 87] **re...

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Find the sum of the elements in the "second" diagonal
Find the sum of the elements in the diagonal that starts at the top-right corner and ends at the bottom-left corner.

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What percentage?
Calculate the output c as the percentage of a on b for given a and b.

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Fill a zeros matrix
The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...

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Tell me the slope
Tell me the slope, given a vector with horizontal run first and vertical rise next. Example input: x = [10 2];

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Hofstadter Q sequence
The Hofstadter Q sequence is defined as follows: The first elements of the sequence are 1, 1, 2, 3, 3, 4, 5, 5, 6, 6. Write ...

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Height of a right-angled triangle
Given numbers a, b and c, find the height of the right angled triangle with sides a and b and hypotenuse c, for the base c. If a...

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Minimal cost
A power house, P, is on one bank of a straight river W meters wide, and a factory, F, is on the opposite bank L meters downstrea...

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Generate a random matrix A of (1,-1)
Input n: is an positive integer which serves as the dimension of the matrix A; Output: A=(Aij),where each entry Aij is either...

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Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

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select the primes of a vector
Find the prime numbers in a vector

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Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

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Find the alphabetic word product
If the input string s is a word like 'hello', then the output word product p is a number based on the correspondence a=1, b=2, ....

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Magic!
Check whether the input matrix is a normal magic square: http://en.wikipedia.org/wiki/Magic_square Output the logical value tr...

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Factorize THIS, buddy
List the prime factors for the input number, in decreasing order. List each factor only once, even if the factorization includes...

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Parasitic numbers
Test whether the first input x is an n-parasitic number: <http://en.wikipedia.org/wiki/Parasitic_number>. ( _n_ is the second in...

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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

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Speed of car
Calculate the Speed of car given its Distance travelled and time taken in x and y respectively

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Calculate the base-10 logarithm of a number
Calculate the logarithm of number x

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