CBSE Question Bank – AI – Class 10 – Chapter 1 Introduction to AI : Foundational Concepts
Que 22. Read the given scenario and answer the questions that follow:
A farmer keeps rabbits in three large hutches that stand in a row in his backyard. Each of the hutches is painted different colours – red, yellow and green. Until recently, the number of rabbits in the green hutch was twice as large as the number of rabbits in the yellow hutch. Then, one day, the farmer took five rabbits out of the left-side hutch and gave them away to the local school’s pet corner. He also took half of the rabbits that remained in the left-side hutch and moved them to the red hutch.
a. What was the colour of the left-side hutch? Justify your answer with an explanation.
Answer: The answer is yellow.
Explanation: As we already know at the outset the number of rabbits in the green hutch was twice as large as the number of rabbits in the yellow hutch. This means that the number of rabbits in the green hutch was an even number. After the farmer removed five rabbits from the left side hutch, then the number of rabbits that remained there also became an even number. This is proven by the fact that it was divisible by 2. Therefore, before those five were removed, the left side hutch contained an uneven number of rabbits hence the left side hutch cannot be the green one, but based on the given information, it cannot be the red one. Hence it is yellow.
Que 23. A scenario is given to you below. Read it and answer the questions that follow:
Late one night, a car ran over a pedestrian in a narrow by street and drove away without stopping. A policeman who saw the vehicle leave the scene of the accident reported it moving at a very high speed. The accident itself was witnessed by six bystanders. They provided the following conflicting accounts of what had happened:
- It was a blue car driven by a man;
- The car was moving at high speed and its headlights were turned off;
- The car did have license plates; it wasn’t going very fast;
- It was a Toyota and its headlights were turned off;
- The car didn’t have license plates; the driver was a woman;
- It was a grey Ford.
When the car and its driver were finally apprehended, it turned out that only one of the six eyewitnesses gave a fully correct description. Each of the other five provided one true and one false piece of information. Keeping that in mind, can you determine the following:
a. What was the car’s brand?
Answer: FORD
b. What was the colour of the car?
Answer: BLUE
c. Was the car going fast or slow?
Answer: FAST
d. Did it have license plates?
Answer: NO
e. Were its headlights turned on?
Answer: NO
f. Was the driver a man or a woman?
Answer: WOMAN
Explanation: Out of the statements of 6 bystanders, the third statement becomes false as the policeman who saw the vehicle leave the scene of the accident reported it moving at very high speed. Then eliminating all false statements of bystanders, the above results can be extracted.
Que 24. A firefighter has to get to a burning building as quickly as he can. There are three paths that he can take. He can take his fire engine over a large hill (5 miles) at 8 miles per hour. He can take his fire engine through a windy road (7 miles) at 9 miles per hour. Or he can drive his fire engine along a dirt road which is 8 miles at 12 miles per hour. Which way should he choose? (speed=distance/time)
Answer: To reach the destination quickly, the fire fighter has to calculate the time required on the basis of given data. Driving his fire engine 5 miles at 8 miles per hour takes 37.5 minutes. Driving his fire engine 7 miles at 9 miles per hour takes about 47 minutes. Driving his fire engine 8 miles at 12 miles per hour takes 40 minutes So he should choose to drive his fire engine over the hill.)
Que 25. A thief has just found a pair of ancient treasure caves. One of the caves is filled with unbelievable treasure and the other has a fire breathing monster that will eat anyone who opens that cave. One cave has a black door decorated with diamonds and the other cave has a brown door decorated with sapphires. Each of the doors has an engraved description on top. The descriptions say:
a. Black Door: Monster is here.
b. Brown Door: Only One Door speaks the truth.
Which door should the thief open?
Answer: The treasure is in the Black door.
Explanation: Let us look at the description on the Brown door. It can be correct or wrong.
Scenario 1: The description on the Brown door is true. Then the description on the Black door has to be false. That means that the inscription on the Black door is false and the cave with black door contains the treasure!
Scenario 2: The description on the Brown door is false. Then either both the descriptions are false or both are true. Both cannot be true as that is impossible and not consistent. That means that both descriptions are false.
CBSE Question Bank – AI – Class 10 – Chapter 1 Introduction to AI : Foundational Concepts
Que 26. How intelligent robots are helping us in accomplishing dangerous jobs?
Answer: Robots let humans avoid some hurtful work:
(i) Lifting up heavy material at the construction site.
(ii) Stirring and mixing metals or liquids at a high temperature.
(iii) Collecting and packaging of radioactive waste.
(iv) Working in contaminated and dusty environments.
Que 27. How AI helps in giving you a personalized experience online?
Answer: AI based recommendations: AI uses advanced machine learning algorithms to analyze browser history, page clicks, social interactions (likes, shares), past purchases, the duration for which a page was viewed, location, etc. to gauge customer interests and preferences. AI can help deliver product recommendations based on frequently bought items, or related products. It can even help customize web pages and elements to suit a customer’s needs. For instance, Netflix does intense behavior analysis based on behavior and demographic data to determine the content that will resonate with their customers.
Chatbots and Automated Messaging: AI-powered chatbots and messaging agents can enhance the customer experience across channels. They can answer simple queries, engage customers, efficiently handle multiple interactions,
Automated Service Interactions: AI-driven programs can send automated messages to customers regarding a pending service, a part replacement, or a regular order.
Curating Select Products: Amazon has come up with the concept of the Amazon 4-star retail store. Products that have received a multitude of 4-star ratings will be offered in this physical store. Amazon will use its product recommendation engine to identify trending products and customers’ favorites and bring them to a brick and mortar setting.
