#include using namespace std; int main () { double num1, num2, sum; cout <« "Enter a number: "; cin >> num1; Cout <« "Enter another number: "; Cin >> num2; num1 + num2 = sum; cout "The sum of the two numbers is « sum" return 0; }

Could you make sure the code is correct. Please read the instructions carefully and the example runs. Thanks.

Practicing Loops. Einstein Private Elementary school has three classes in each of its 9 grades. 27 classes in total.  It has kindergarten (grade 0) though 8th grade.   The school allows parents to pay tuition over the nine-month school year.  Tuition for kindergarten is $90 dollars every month.  Tuition for the other grades is $50 times the grade level every month.  (1st grade is $50 a month, second grade is $100 a month, etc.) Design a programming solution that outputs nine tuition payment bills for each of the 27 classrooms.  Each bill must contain the grade number (0 through 8), the classroom number (1 through 3), the month (1 through 9) and the amount of the tuition due. Your output should look something like: Grade Classroom Month Tuition   0             1               1        90   0             1               2        90   0             1               3        90   0             1               4        90   ...   8             3               7      400   8             3…

code in python (A) please   Solve the so-called "Birthday Problem". Write a program that takes an integer ?N and uses the function np.random.randint (low = 0, high = N) from numpy to generate a random sequence of integers between 00 and ?−1N−1. Run experiments to validate the hypothesis that the number of integers generated until the first repeated value is approximately ?∗?2⎯⎯⎯⎯⎯⎯⎯√π∗N2. a) Write a function birthday(N) that returns the number of values generated until a value is repeated as a function of the range of possible values ?N (from 00 to ?−1N−1); b) Write a function birthday_sim(N) that repeats birthday(N) a total of n_sim = 20000 times and returns the average of all the numbers generated; c) Show on one plot that as ?N increases (with a doubling experiment), from ?=2N=2 to ?=1000N=1000, the value of birthday_sim(N) approaches ?∗?2⎯⎯⎯⎯⎯⎯⎯√π∗N2.

Write a recursive function that takes as a parameter a nonnegative integer    and generates the following pattern of stars. If the nonnegative integer is 4,    the pattern generated is as follows:        ****    ***    **    *    *    **    ***    ****        Also, write a program that prompts the user to enter the number of lines in the pattern and uses the recursive function to generate the pattern. For    example, specifying 4 as the number of lines generates the preceding pattern.