BÀI 11 a, 1-2+3-4+5-6+...+2024-2024 b, 1-2 c, 3-4 d, ( -3) - (-7)-21 e (-2).(-3) g, (-2)-(-3).(-4) h(-2) . (-4)-2

1. Problem type and necessary steps: a) The problem is to find the sum of the series 1-2+3-4+5-6+...+2024-2024. To solve this, we can use a loop to iterate through the numbers from 1 to 2024 and add or subtract them based on their position in the series. b) The problem is to find the result of the expression 1-2. This can be solved by subtracting 2 from 1. c) The problem is to find the result of the expression 3-4. This can be solved by subtracting 4 from 3. d) The problem is to find the result of the expression (-3) - (-7) - 21. This can be solved by subtracting -7 from -3 and then subtracting 21 from the result. e) The problem is to find the result of the expression (-2) * (-3). This can be solved by multiplying -2 and -3. g) The problem is to find the result of the expression (-2) - (-3) * (-4). This can be solved by multiplying -3 and -4, and then subtracting the result from -2. h) The problem is to find the result of the expression (-2) * (-4) - 2. This can be solved by multiplying -2 and -4, and then subtracting 2 from the result. 2. Full executable Python code: a) Sum of the series 1-2+3-4+5-6+...+2024-2024: sum = 0 for i in range(1, 2025): if i % 2 == 0: sum -= i else: sum += i print("Sum of the series:", sum) b) Result of the expression 1-2: result = 1 - 2 print("Result:", result) c) Result of the expression 3-4: result = 3 - 4 print("Result:", result) d) Result of the expression (-3) - (-7) - 21: result = -3 - (-7) - 21 print("Result:", result) e) Result of the expression (-2) * (-3): result = -2 * -3 print("Result:", result) g) Result of the expression (-2) - (-3) * (-4): result = -2 - (-3) * (-4) print("Result:", result) h) Result of the expression (-2) * (-4) - 2: result = -2 * -4 - 2 print("Result:", result)