In a certain code language, MOTHER is written as 541203, FATHER is written as 961203, and PARTNER is written as 7631803. How will PANTHER be written in that language?

Given: MOTHER is written as 541203, FATHER is written as 961203, and PARTNER is written as 7631803.

Logic: Here, each letter of the given words is coded with an individual number in the same order, and the common letters have the same codes.

M​$$\rightarrow$$5; O​$$\rightarrow$$4; T$$\rightarrow$$1; H$$\rightarrow$$2; E$$\rightarrow$$0; R$$\rightarrow$$3​​​​​

F$$\rightarrow$$9; A$$\rightarrow$$6; T$$\rightarrow$$1; H$$\rightarrow$$2; E$$\rightarrow$$0; R$$\rightarrow$$3​​​​​​

P$$\rightarrow$$7; A$$\rightarrow$$6; R$$\rightarrow$$3; T$$\rightarrow$$1; N$$\rightarrow$$8; E$$\rightarrow$$0; R$$\rightarrow$$3​​​​​​​

Now, the letters of the word 'PANTHER' are common with the letters of the above-given words. So, those letters will have the same codes.

P$$\rightarrow$$7; A$$\rightarrow$$6; N$$\rightarrow$$8; T$$\rightarrow$$1; H$$\rightarrow$$2; E$$\rightarrow$$0; R$$\rightarrow$$3​​​​​​​

So, 'PANTHER' is coded as '7681203'.

Thus, the correct answer is (d).