Backgammon - Your turn!
A previous problem in this occasional series (Problem 45967) set up a possible representation of a backgammon board:
White ston...
4 years ago
Solved
Easy Sequences 62: Sum of Omega-3 Function
For an integer , the prime big omega function, , is defined as the total number of prime factors of . If , since , therefore . ...
Total resistance of resistors in parallel
What is the total resistance of a number of resistors in parallel?
A vector R contains the resistances (in Ohm) of n resistors,...
4 years ago
Solved
Total resistance of resistors in series
What is the total resistance of a number of resistors in series?
A vector R contains the resistances (in Ohm) of n resistors, w...
SatCom #9: Overall Link Performance
Satellite and Space Engineering - Problem #9
This is part of a series of problems looking at topics in satellite and space comm...
4 years ago
Solved
SatCom #8: Satellite Link Budget
Satellite and Space Engineering - Problem #8
This is part of a series of problems looking at topics in satellite and space comm...
4 years ago
Solved
Easy Sequences 59: Almost Twin Primes
A positive integer pair , is called an "almost twin prime pair", if one of the pair is a prime and the other is either a prime o...
Easy Sequences 56: Counting "Ugly" Numbers
A positive integer is called a regular number, if and only if there exist a non-negative integer , such that . For some reason...
Multiply Large Hexadecimal Numbers
Multiply two large hexadecimal numbers together and output the hexadecimal representation of the result.
For example:
a='abcde...