The Math Illusion: Where Did the Missing Rupee Go?

The Math Illusion: Where Did the Missing Rupee Go?

Assessment

Interactive Video

Mathematics

6th - 7th Grade

Hard

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The video explores a mathematical illusion involving a comic book purchase. The narrator describes borrowing money from friends to buy a comic, leading to a perceived discrepancy in calculations. The video analyzes the mistake, explaining that different financial elements were incorrectly combined. It concludes with insights on mathematical illusions, emphasizing the importance of understanding the nature of calculations.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the initial amount borrowed from each friend to buy the comic book?

₹55

₹60

₹50

₹45

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After buying the comic book, how much money did the narrator return to each friend?

₹3

₹2

₹4

₹1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the total amount the narrator needed to return to both friends after the purchase?

₹100

₹99

₹98

₹97

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the key lesson about mathematical operations highlighted in the video?

Always add profits and losses together

Never mix different types of transactions in calculations

Add all numbers regardless of context

Subtract purchases from sales

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main reason for the confusion in the comic book puzzle?

Incorrect subtraction

Mixing different types of transactions

Misplacing a rupee

Forgetting to return money