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Which pair has HCF (26) and LCM (858)?
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Answer and explanation
Correct answer: (78) and (286)
Step 1: (78=26\times3) and (286=26\times11). Step 2: Since (3) and (11) are coprime, HCF is (26) and LCM is (26\times3\times11=858). Step 3: In options, factor out the HCF and check whether the remaining numbers are coprime.
Frequently asked questions
What is the correct answer to this question?
(78) and (286)
Why is this the correct answer?
Step 1: (78=26\times3) and (286=26\times11). Step 2: Since (3) and (11) are coprime, HCF is (26) and LCM is (26\times3\times11=858). Step 3: In options, factor out the HCF and check whether the remaining numbers are coprime.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: HCF and LCM using prime factorisation.
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