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Multiple choice

How many words can be formed by taking four different letters of the word MATHEMATICS?

  1. 7,920

  2. 1,680

  3. 70

  4. 180

  5. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

MATHEMATICS has 11 letters: M, A, T, H, E, I, C, S (8 unique). We need to choose 4 different letters from 8: 8C4 = 70. Each set of 4 can be arranged in 4! = 24 ways. Total = 70 * 24 = 1680.

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