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What is the exponent of (2) in the prime factorisation of (168)?
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Answer and explanation
Correct answer: 3
Step 1: Write (168) as (8 \times 21). Step 2: (8=2^3) and (21=3 \times 7), so (168=2^3 \times 3 \times 7). Step 3: To find the required exponent, you do not need to calculate any extra value.
Frequently asked questions
What is the correct answer to this question?
3
Why is this the correct answer?
Step 1: Write (168) as (8 \times 21). Step 2: (8=2^3) and (21=3 \times 7), so (168=2^3 \times 3 \times 7). Step 3: To find the required exponent, you do not need to calculate any extra value.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Prime Factorisation.
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