Topic Details (Notes format)

How to Identify Independent vs. Dependent Events

Subject: Mathematics

Book: Maths Mastery

Independent events do not affect each other’s outcome (e.g., rolling a die and flipping a coin), while dependent events do (e.g., drawing cards without replacement). Mathematically, events A and B are independent if P(A ∩ B) = P(A) × P(B). If they do not satisfy that, they are dependent. Understanding this difference is crucial in probability trees, combinatorial scenarios, or chain-of-event analyses. Correct classification ensures you multiply probabilities appropriately, whether you’re designing experiments or calculating risk in finance, health, or engineering contexts.

Practice Questions

The probability of getting an even number when rolling a die is:

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If 8x = 512, what is the value of x?

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If a:b = 3:4 and b:c = 5:6, what is a:c?

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What is the sum of the first 10 positive even numbers?

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If the sum of three consecutive integers is 96, what are the integers?

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If a square has a perimeter of 64 cm, what is its area?

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A train 120 meters long is moving at a speed of 54 km/h. How long will it take to pass a pole?

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If a cone has a base radius of 3 cm and height of 4 cm, what is its slant height?

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If log(100) = 2 and log(10) = 1, what is log(1000)?

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What is the HCF of 72 and 120?

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