.When rolling a certain unfair six sided die with faces numbered `1,2,3,4,5&6` the probability of obtaining a specified face F is greater than `1/6`& the probability of the face opposite to it is less than` 1/6.`The probability of obtaining other four faces are each equal to `1/6` & the sum of the numbers on opposite faces is 7 .When two such die are rolled the probability of obtaining a sum of 7 is` 47/288` .If the probability of obtaining the face F is m/n where m&n are relatively prime positive integers then`(m+n)=`