1) Write a program that uses a while loop. In each iteration of the loop, prompt the user to enter a number – positive, negative, or zero. Keep a running total of the numbers the user enters and also keep a count of the number of entries the user makes. The program should stop whenever the user enters “q” to quit. When the user has finished, print the grand total and the number of entries the user typed. 2. You can test to see if an integer, x, is even or odd using the Boolean expression (x / 2) * 2 == x. Integers that are even make this expression true, and odd integers make the expression false. Use a for loop to iterate five times. In each iteration, request an integer from the user. Print each integer the user types, and whether it is even or odd. Keep up with the number of even and odd integers the user types, and print “Done” when finished, so the user won’t try to type another integer. Finally, print out the number of even and odd integers that were entered. 3. Use nested for loops to produce the following output 1​1 1​2 1​3 1​4 2​1 2​2 2​3 2​4 Let the outer loop print the numbers in the left column, and the inner loop print the numbers in the right column. In each iteration, print the loop control variables to produce the output. 4. Use nested for loops to produce the following output: X XX XXX XXXX XXXXX

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