How many words can one form by shuffling the letters of the word QUEUE, if Q is always followed by U? The words thus formed need not necessarily have any meaning.

उत्तर देखें और व्याख्या

उत्तर: (D) 12

व्याख्या

Treat 'QU' as one block. Units: QU, U, E, E. Arrangements = 4!/2! = 12.