Solution:RICE = 5136, FUR = 327, FIN = 785
Possible code of ‘F’ = 7 (From equation II and III)
Possible code of ‘I’ = 5 (From equation I and III)
Possible code of ‘N’ = 8 (From equation III)
Possible code of ‘R’ = 3 (From equation I and II)
Possible code of ‘U’ = 2 (From equation II)
So, possible code of FUN = 872