For condition one - They have mentioned that ten's digit is a factor of one's digit. Implying that numbers are - 22 ( 2 is factor of 2 ) , 24 ( 2 is a factor of 4 ) , 26, 28, 33, 36, 39 etc. Thus these numbers are composite as they are not prime. Condition 2 , gives us 21,22,23,24....29. Of which 2...