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Algorithms AQA · Topic 3.1
⏱ 00:23
Question 5 of 10 MEDIUM

What does a CPU fetch-decode-execute cycle do?

A Stores data permanently
B Processes instructions from memory ✓
C Manages network packets
D Controls input devices
✓ Correct!
The FDE cycle repeatedly fetches an instruction from memory, decodes it, then executes it.
⚡ 22s 2× faster than average
85%
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72% overall

Overall Mastery

Up 8% this week

Topic Breakdown
Algorithms
85%
Data Structures
68%
Boolean Logic
42%
Networks
79%
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Grade A
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+8%
this week
main.py
def fibonacci(n):
if n <= 1: return n
return fibonacci(n-1) + fibonacci(n-2)
print(fibonacci(10))
# 60+ coding challenges inside
Output
55
✓ Executed in 0.02s
CHALLENGES
12/20
completed
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A* A B C NOW EXAM DAY
Current
Grade B
72% avg score
Predicted
Grade A
by exam date
THIS WEEK
+8%
improvement
📈
165
questions done
BRIGHTREVISION · WEEKLY REPORT
Alex's Week in Review 😎
Week of 27 Jan – 2 Feb 2026
47
Questions answered
5
Topics studied
🔥 7
Day streak
Predicted Grade Change
Grade B → A
+12% ↑
Focus area this week: Boolean Logic (42%) — encourage 15 min daily practice.
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