Question

The total number of distinct permutation of the letters of the word "GOOD". a) 2 b) 4 c) 8 d) 12 Answer
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Answer 1

Answer:

The correct answer is option (D) . 12

Step-by-step explanation:

There are four letters in the word "GOOD"

If all letters were different, then number of permutation would have been $4!$, but O is repeated twice, therefore required number of permutations

                            $=\dfrac{4!}{2!}=\dfrac{4\times 3\times 2\times 1}{2\times 1}=\dfrac{24}{2}=12$