Answer: Option B Explanation: The HCF of a group of numbers will be always a factor of their LCM.HCF is the product of all common prime factors using the least power of each common prime factor. LCM is the product of highest powers of all prime factors. HCF of the two numbers = 23Since HCF will be always a factor of LCM, 23 is a factor of the LCM.Given that other two factors in the LCM are 13 and 14.Hence factors of the LCM are 23, 13, 14So, numbers can be taken as (23 × 13) and (23 × 14)= 299 and 322 Hence, largest number = 322 NoteWe have seen that the numbers are (23 × 13) and (23 × 14).If we write the numbers as the product of prime factors,first number = (23 × 13)second numbers = (23 × 14) = (23 × 2 × 7)HCF is the product of all common prime factors using the least power of each common prime factor= 23LCM is the product of highest powers of all prime factors= 23 × 13 × 2 × 7 = 23 × 13 × 14Clearly we get HCF as 23 and the factors in the LCM as 13, 14 and 23. Hence every conditions are satisfied.
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