How many ways the letters in the word DELHI can be arranged?
a. 25
b. 60
c. 120
d. 40


The number of ways the letters in the word "DELHI" can be arranged can be calculated using the factorial of the number of letters. Since there are 5 unique letters in "DELHI", the number of arrangements is given by \( 5! \) (5 factorial).

\[ 5! = 5 \times 4 \times 3 \times 2 \times 1 = 120 \]

Therefore, the correct answer is:
c. 120

Would you like more details or have any questions? Here are some related questions you might find interesting:

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**Tip:** When dealing with permutations, always consider whether there are repeated items, as this affects the calculation.

Learn how to calculate permutations to find out how many ways the letters in the word DELHI can be arranged. The problem involves using factorials and permutations concept. Correct answer: 120.

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