Class 7 Computer & AI Chapter 8: AI: How AI Really Learns — practice questions with answers
Free practice for Class 7 Computer & AI, Chapter 8: AI: How AI Really Learns. Try the solved questions below, then take a free test with instant marking and explanations.
25 questions9 easy, 13 medium, 3 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. Arjun collected how many photos of handwritten numbers?
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Answer: 1000 (± 0)
Why: He collected 1000 photos from friends. [AI for New Learner — Advance 1, Ch 3]
Why: He collected 1000 photos from friends. [AI for New Learner — Advance 1, Ch 3]
Q2. Why did Arjun remove blurry photos?
- Cleaning the data improves what the AI learns
- Blurry photos are illegal
- To save money
- Bhai told him to delete all photos
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Answer: A. Cleaning the data improves what the AI learns
Why: Garbage in, garbage out. [AI for New Learner — Advance 1, Ch 3]
Why: Garbage in, garbage out. [AI for New Learner — Advance 1, Ch 3]
Q3. Arjun split 1000 photos into 800 for training. How many were for testing?
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Answer: 200 (± 0)
Why: 1000 − 800 = 200. [AI for New Learner — Advance 1, Ch 3]
Why: 1000 − 800 = 200. [AI for New Learner — Advance 1, Ch 3]
Q4. Arjun’s AI got 92 out of 100 test photos right. What is its accuracy in percent?
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Answer: 92 (± 0)
Why: 92/100 = 92%. [AI for New Learner — Advance 1, Ch 3]
Why: 92/100 = 92%. [AI for New Learner — Advance 1, Ch 3]
Q5. After adding more varied data, Arjun’s accuracy rose to 96%. By how many percentage points did it improve from 92%?
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Answer: 4 (± 0)
Why: 96 − 92 = 4. [AI for New Learner — Advance 1, Ch 3]
Why: 96 − 92 = 4. [AI for New Learner — Advance 1, Ch 3]
Q6. The phrase ‘______ in, garbage out’ means bad data gives bad AI.
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Answer: garbage
Why: Variety in = wisdom out. [AI for New Learner — Advance 1, Ch 3]
Why: Variety in = wisdom out. [AI for New Learner — Advance 1, Ch 3]
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How many practice questions are there for Class 7 Computer & AI Chapter 8: AI: How AI Really Learns?
25 questions (9 easy, 13 medium, 3 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 7 Computer & AI syllabus, used by CBSE and many state boards.