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Maths Power Play - Chapter 2 Class 8 (Ganita Prakash) Assertion and Reason Questions

Assertion Reasoning Quiz · Class 8 · Maths · CBSE

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Chapter 2 Class 8 - Power Play (Ganita Prakash) | 7 questions | about 6 minutes

Practise Power Play - Chapter 2 Class 8 (Ganita Prakash) with Teachoo's Assertion Reasoning Quiz (Class 8 · Maths · CBSE). Practise these questions in a free interactive quiz with answer feedback.

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Question 1 of 7
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Question 1 of 7
Assertion (A): \( 2^{-4} \) is a negative number.
Reason (R): A negative exponent indicates the reciprocal of the base raised to a positive power: \( n^{-a} = \frac{1}{n^a} \).
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Question 2 of 7
Assertion (A): If the population of sheep is \( 10^9 \) and goats is \( 10^9 \), the combined population is \( 2 \times 10^9 \).
Reason (R): When adding identical exponential terms, you add their bases and keep the exponent the same.
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Question 3 of 7
Assertion (A): The value of \( m^5 \times m^{-5} \) is 0.
Reason (R): Any non-zero number raised to the power of 0 is equal to 1.
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Question 4 of 7
Assertion (A): If the human population is \( 8 \times 10^9 \) and the elephant population is \( 4 \times 10^5 \), there are 20,000 humans for every elephant.
Reason (R): Dividing the human population by the elephant population: \( (8 \times 10^9) \div (4 \times 10^5) = 2 \times 10^4 = 20,000 \).
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Question 5 of 7
Assertion (A): In a pond where lotuses double every day, if it is full on day 30, it was one-quarter (1/4) full on day 28.
Reason (R): Since the population doubles every day, moving backwards in time means halving the population for each day.
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Question 6 of 7
Assertion (A): When a paper is folded 46 times, its thickness increases linearly.
Reason (R): Folding a paper in half doubles its thickness with every fold, which represents multiplicative or exponential growth.
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Question 7 of 7
Assertion (A): \( 6^4 \times 3^2 \) is equal to \( 2^4 \times 3^6 \).
Reason (R): The power of a product rule states that \( (m \times n)^a = m^a \times n^a \).
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