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.

উত্তর দেখান ও ব্যাখ্যা

উত্তর: (D) 12

ব্যাখ্যা

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