So after 21 years, it drops below. But the question asks when it *drops below* — first time ≥ 6M is at t=20, so below at t > 20 → first full year is 21, but "in how many years" means smallest integer t such that condition holds → t = 21

Sun, 03 May 2026 11:49:49 +0000

Understanding the Threshold Crossing: When Does a Value Drop Below 6 Million After a 21-Year Run? After running steadily above 6 million for 21 years, a key milestone occurs: for the first time reaching or exceeding 6 million is precisely at year 20. But when the value drops below 6 million, it marks a meaningful shift — and understanding when that happens is crucial for analysis, forecasting, and decision-making. ### Key Timeline - At t = 20, the value crosses ≥ 6 million. - For t > 20, specifically in the first full year beyond 20, i.e., t = 21, the value drops below 6 million for the first time. ### Why t = 21 Matters While the system tracks values over integer time points, “after 21 years” signals year 21. The condition — dropping below 6 million — is first observed starting at t = 21. Therefore, t = 21 is the smallest integer when the threshold is breached downward.