Which number has exponent (4) of (2) and exponent (2) of (5) in its prime factorisation, but does not have (3) as a factor?
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Answer and explanation
Correct answer: 400
Step 1: The condition requires (2^4 \times 5^2). Step 2: (2^4 \times 5^2=16 \times 25=400), and it has no factor (3). Step 3: Check the exponent of every prime before choosing.
Frequently asked questions
What is the correct answer to this question?
400
Why is this the correct answer?
Step 1: The condition requires (2^4 \times 5^2). Step 2: (2^4 \times 5^2=16 \times 25=400), and it has no factor (3). Step 3: Check the exponent of every prime before choosing.
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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