In a certain code language, 'CAT' is coded as 9 and 'MOUSE' is coded as 25. How will 'TROUBLE' be coded in the same language?

​​Logic: The code is the square of the number of letters in the word.

CAT has 3 letters → 3² = 9

MOUSE has 5 letters → 5²=25

For TROUBLE (7 letters): 7² = 49

Thus, correct option is (d).

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