the hcf of two numbers is 42 and the other two factors of their lcm are 10 and 20 . what is the largest number .
"explanation : hcf of the two numbers = 42 hcf will be always a factor of lcm 42 is factor of lcm other two factors are 10 & 20 then the numbers are ( 42 * 10 ) and ( 42 x 20 ) = 420 and 840 answer : option c"
multiply(42, 20)