In how many different ways can the letters of the word DREAM be arranged?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 120
DREAM has 5 letters, all different, so every arrangement is a permutation of 5 distinct objects: 5 choices for the first place, 4 for the second, and so on.
Number of arrangements \(=5!=5\times4\times3\times2\times1=120\)