If RAMON is written as 12345 and DINESH as 675849, then HAMAM will be written as

The correct option is 92323.

To find the code for the word HAMAM, we can analyze the letter-to-digit mapping established by the given coded words:

From the word RAMON coded as 12345, we get the following mappings:
R = 1
A = 2
M = 3
O = 4
N = 5

From the word DINESH coded as 675849, we get the following mappings:
D = 6
I = 7
N = 5 (which matches the mapping of N in RAMON)
E = 8
S = 4
H = 9

Now, we determine the code for the word HAMAM using the established letter mappings:
H = 9
A = 2
M = 3
A = 2
M = 3

Putting these digits together in order, the code for HAMAM is 92323.