4. (Check SSN) Write a program that prompts the user to enter a Social Security number in the format DDD-DD-DDDD, where D is a digit. Your program should check whether the input is valid. Here are sample runs: Enter a SSN: 232-23-5435 JEnter 232-23-5435 is a valid social security number Enter a SSN: 23-23-5435 JEnter 23-23-5435 is an invalid social security number

Q3. (Dice Rolling) Write a program that simulates the rolling of two dice. The program should use rand to roll the first die and should use rand again to roll the second die. The sum of the two values should then be calculated. [Note: Each die can show an integer value from 1 to 6, so the sum of the two values will vary from 2 to 12, with 7 being the most frequent sum and 2 and 12 being the least frequent sums.] Figure 7.26 shows the 36 possible combinations of the two dice. Your program should roll the two dice 10,000 times. Use a one-dimensional array to tally the numbers of times each possible sum appears. Print the results in a tabular format. Also, determine if the totals are reasonable (i.e., there are six ways to roll a 7, so approximately one-sixth of all the rolls should be 7). 1 2 3 4 5 1 2 4 6 7 3 4 6 7 3 4 5 7 8 9 4 7 8 9 10 7 8 10 11 7 10 11 12 Row\Col 3.

:Write some statements that display a list of integers from 10 to 20 inclusive ,each with its square root next to it. Write a single statement to find and display the sum of the successive even integers 2, 4, ..., 200. (Answer: 10 100) Ten students in a class write a test. The marks are out of 10. All the marks are entered in a MATLAB vector marks. Write a statement to find and display the average mark. Try it on the following marks: 580 10 3 85794 (Answer: 5.9)

using c++ programming ::::: 16. (Pick 5 Lotto) Write a program to simulate a pick-5 lottery game. Your program should generate and store 5 distinct numbers between 1 and 9 (inclusive) into an array. The program prompts the user to enter five distinctbetween 1 and 9 and stores the number into another array. The programthen compares and determines whether the two arrays are identical. If thetwo arrays are identical, then the user wins the game; otherwise the program outputs the number of matching digits and their position in the array.Your program must contain a function that randomly generates thepick-5 lottery numbers. Also, in your program, include the functionsequential search to determine if a lottery number generated hasalready been generated.

rin t] (Replace strings) Write the following function that replaces the occurrence of a substring old substring new_substring in the string s. The function returns true if string s is changed, and otherwise, it returns false. bool replace_strings(string& s, with new substring a const string& old_string, const string& new_string) Write a test program that prompts the user to enter three strings, i.e., s, old_string, and new_string, and display the replaced string.

python nMath: pentagonal numbers) A pentagonal number is defined as n(3n-1)/2 for n=1,2,..., and so on. So, the first few numbers are 1, 5, 12, 22, .... Write a function with the following header that returns a pentagonal number: def getPentagonalNumber(n): Write a test program that uses this function to display the first 100 pentagonal numbers with 10 numbers on each line.

13) You want addEm to now add all three values and return the sum and changeEm to change x and y, but leave zalone. Which should you do?a) Redefine addEm and changeEm without referencing super.addEm( ) or super.changeEm( )b) Redefine addEm to return the value of z + super.addEm( ), but leave changeEm alonec) Redefine changeEm to call super.changeEm( ) and then set z = x + y, but leave addEm aloned) Redefine addEm to return the value of z + super.addEm( ) and redefine changeEm to callsuper.changeEm( ) and then set z = x + ye) Redefine changeEm to call super.changeEm( ) without doing anything to z, and redefine addEm toreturn super.addEm( )

Q1) Write a program that • Asks for a natural number (Assume that number is n) • Draws the following triangular shape with n lines of numbers. Example: (n = 5) 1. 2 1 3 21 4 3 2 1 5 4 3 21 (n = 3) 1. 21 3 21 In the triangular shape, There is a space character between each neighboring numbers on the same line. • The rightmost number is supposed to be 1. • The numbers are ordered in a descending order. The ith line should contain i numbers. The numbers are aligned right.

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