How many words can be formed by the letters of the word "TUESDAY"?
If all the vowels used in the word have to be taken in the order as these letters come in English alphabets.
TUESDAY, total numbers of letters in the word TUESDAY are 7
So numbers of methods to form word are 7*6*5*4*3*2*1/3*2*1 = 840
The denominator is due to the restriction given in the question