ii) Write a Python program to input a string from the user and check if the string is a binary string or not. A binary string is a string that contains only O's and 1's. Input: 1010101 Output: true Input: 5018 Output: false

4. Write a Python program to read input a string str and a character ch. Find the count of the character ch in the string str. Print the count in the output.

v) Write a Python program to input two strings s1 and s2 of lengths x1 and x2 respectively. Compute the value of the expression x13 - x22 + x1*x2 - 5.

Please help me solve this problem C. Chess Boundary Positions: Write a program called chess_pos.py On a chessboard, positions are marked with letters between a and h for the column and a number between 1 and 8 for the row. Give a 2 character input string with a letter (a-h) and a number (1-8), print "Corner" if the value indicates a square on a corner. Print "Border" if the value indicates a square on an edge of the board. Otherwise, print "Inside".