The HCF of two numbers is 42 and the other two factors of their LCM are 10 and 20. What is the largest number.  Choose the correct choice from the following choices: A) 462 B) 450 C) 840 D) 504 E) 555
Explanation:   H840F of the two numbers = 42   H840F will be always a factor of L840M   42 is factor of L840M   other two factors are 10 &amp; 20   Then the numbers are (42 *10) and (42 x 20)   = 420 and 840   Answer: Option 840
<result>C</result>
The HCF of two numbers is 42 and the other two factors of their LCM are 10 and 20. What is the largest number.