To determine if we can order 365 cards from smallest to largest in 2000 steps, we need to analyze the given sum and the function f(x)=⌈log3x⌉.
1. **Understanding the function f(x)=⌈log3x⌉**:
- For x=3, log33=1, so f(3)=1.
- For 4≤x≤9, 1<log3x≤2, so f(x)=2.
- For 10≤x≤27, 2<log3x≤3, so f(x)=3.
- For 28≤x≤81, 3<log3x≤4, so f(x)=4.
- For 82≤x≤243, 4<log3x≤5, so f(x)=5.
- For 244≤x≤365, 5<log3x≤6, so f(x)=6.
2. **Summing the values of f(x)**:
- We need to sum ⌈log3(i+1)⌉ for i from 2 to 365.
- The sum can be broken down as follows:
i=2∑365⌈log3(i+1)⌉=i=2∑31+i=4∑92+i=10∑273+i=28∑814+i=82∑2435+i=244∑3656
3. Calculating each segment:
- For ∑i=231:
1⋅(3−2+1)=1⋅2=2
- For ∑i=492:
2⋅(9−4+1)=2⋅6=12
- For ∑i=10273:
3⋅(27−10+1)=3⋅18=54
- For ∑i=28814:
4⋅(81−28+1)=4⋅54=216
- For ∑i=822435:
5⋅(243−82+1)=5⋅162=810
- For ∑i=2443656:
6⋅(365−244+1)=6⋅122=732
4. Summing all segments:
2+12+54+216+810+732=1826
5. Comparing with the number of steps:
- The total number of steps required is 1826.
- Given that we have 2000 steps, we can indeed order the 365 cards from smallest to largest.
The final answer is True