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Question
Find the HCF of the smallest prime number and the smallest composite number.
Numerical
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Solution
Given: Smallest prime number = 2; smallest composite number = 4.
Divisors of 2: 1, 2.
Divisors of 4: 1, 2, 4.
Common divisors: 1, 2.
Greatest common factor = 2. ...(Prime-factor method: 2 = 2; 4 = 22 → common factor 21 = 2.)
HCF = 2.
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