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def hello(): print(" ### 1a. Count digits, letters, and special characters in a string python def count_chars(s): digits = letters = special = 0 for char in s: if char.isdigit(): digits += 1 elif char.isalpha(): letters += 1 else: special += 1 return digits, letters, special string = input("Enter a string: ") d, l, s = count_chars(string) print(f"Digits: {d}, Letters: {l}, Special characters: {s}") ### 1b. Generate all permutations of a string using recursion python def get_permutations(s): if len(s) == 1: return [s] permutations = [] for i in range(len(s)): first_char = s[i] remaining_chars = s[:i] + s[i+1:] for perm in get_permutations(remaining_chars): permutations.append(first_char + perm) return permutations input_str = input("Enter a string: ") print("All permutations:") print(get_permutation...