How many letters are there in the word "MATHEMATICS" without repetition?
Correct answer: B. 8
- A. 7
- B. 8
- C. 9
- D. 10
Explanation
The word 'MATHEMATICS' is composed of the following letters: M, A, T, H, E, M, A, T, I, C, S. When we remove repeated letters, we are left with the unique letters: M, A, T, H, E, I, C, S. In total, there are 8 unique letters. Therefore, Option B is correct. Option A undercounts the unique letters, Option C overcounts by including a repeated letter, and Option D counts all letters without removing duplicates.
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