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Logic Building - Phase 4: Basic Arrays
Practice array operations, searching, counting, and transformation logic
50 questions•5 pages•~75 min
Use this quiz track to strengthen recall, speed, and exam-style decision making. Attempt one page first, review explanations, and then re-attempt incorrect questions without notes.
A good scoring strategy is to mark uncertain questions, finish known ones quickly, and return with elimination logic. This improves accuracy while keeping momentum under time constraints.
Progress: 0 / 500%
Page 2 of 5 • Questions 11-20 of 50
Q11easy
What will be printed? arr = [1, 2, 3, 2, 4, 2] count = arr.count(2) print(count)
Q12easy
What is the result?
arr = [3, 1, 4, 1, 5]
arr.sort()
print(arr)Q13easy
What will be printed? arr = [1, 2, 3, 4, 5] arr.reverse() print(arr)
Q14easy
What does this code do? arr = [1, 2, 3, 4, 5] result = sum(arr) / len(arr)
Q15medium
What is the output?
arr = [10, 20, 30, 40]
print(arr[1:3])Q16medium
What will be printed? arr = [1, 2, 3] arr.extend([4, 5]) print(arr)
Q17medium
What is the result?
arr = [5, 2, 8, 1, 9]
max_index = arr.index(max(arr))
print(max_index)Q18medium
What will be printed? arr = [1, 2, 3, 4, 5] arr.pop() arr.pop(0) print(arr)
Q19medium
What does this code do? arr = [1, 2, 3, 4, 5] result = [x for x in arr if x % 2 == 0]
Q20hard
What is the output?
arr = [1, 2, 3]
arr2 = arr.copy()
arr2[0] = 10
print(arr)...