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How many 3-letter words can be made using the letters of the word ORIENTAL?
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UPSC Other Question
There are 6 items in columns A and 6 items in column B. A student is asked to match each item in column A with an item in column B. How many possible answers (correct or incorrect) are there to the question?
The letters of the word WEDNESDAY are arranged in a line, each arrangement ending with letter S. How many different arrangements are possible? How many of them start with letter D?