Write a python3 function sqr( n ) that returns the square of its numeric parameter n.

In Phython Language: The DNA of a living organism consists of a string of 4 different bases represented with letters A, T, G, C. The DNA has a double helix structure which means these bases are paired in the string. An A base is always paired with a T base molecule and a C base is always paired with G molecule. Write a function matchingPair that accepts a single strand of the DNA structure as a string parameter and produces the pairing strand as a result and returns it. Strings can be considered as list of characters. Therefore the subscript notation that we use for lists is acceptable for strings as well. For example to reach to the 4th character of a string variable mystring, you may use the notation mystring[3].  Write another function search that accepts a long and a short DNA strand as parameters. The function should return the index positions of the occurrences of the short strand in the long strand as a list. Test your functions by accepting a long strand of DNA to find the…

I am trying to create a monthly mortgage calculator in C++, but i cannot get the function I am trying to create to work. The output it gives for the monthly payment is 53125 for a 150000 loan at 4.25% for 15 years.

In C++ please, thanks. A prime number is an integer n > 1 whose only positive divisors are 1 and n itself. Write a boolean-valued function that determines whether an integer is a prime number.