Answer:23 max year: November, 2001
24 max year: April, 2014
25 max year: The 25th solar cycle just started in late 2019 and will continue through 2030. Therefore, the maximum sunspot for cycle 25 is yet to occur. But it is predicted to occur between year 2023-2026 with a sunspot range of 95-130.
Step-by-step explanation: