In how many different ways can the letters of the word 'MATHEMATICS' b...
In the word 'MATHEMATICS', we'll consider all the vowels AEAI together as one letter.
Thus, we have MTHMTCS (AEAI).
Now, we have to arrange 8 letters, out of which M occurs twice, T occurs twice
Number of ways of arranging these letters =8! / ((2!)(2!))= 10080.
Now, AEAI has 4 letters in which A occurs 2 times and the rest are different.
Number of ways of arranging these letters =4! / 2!= 12.
Required number of words = (10080 x 12) = 120960
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In how many different ways can the letters of the word 'MATHEMATICS' b...
Just see the multiple of 9 because when you try to find answer with the help of factorial than 9 is there when no. Multiples.
In how many different ways can the letters of the word 'MATHEMATICS' b...
To solve this problem, we need to first identify the vowels in the word 'MATHEMATICS'. The vowels in the word are A, E, A, I.
Now, let's consider the vowels as a single entity. So, we have 'MTHMTCS' and 'AEA'.
First, let's calculate the number of ways to arrange the consonants 'MTHMTCS'. There are 7 consonants in total, but 'T' and 'M' are repeated twice. Therefore, the number of ways to arrange the consonants is given by 7!/2! = 2520.
Next, let's consider the vowels 'AEA'. Since all three vowels are the same, we need to consider the number of ways to arrange them within themselves. This is given by 3!/2! = 3.
Now, we need to consider the arrangement of the consonants and vowels as a whole. Since we have treated the vowels as a single entity, we now have 2520 * 3 = 7560 ways to arrange the consonants and vowels together.
However, the vowels themselves can be arranged in 3! = 6 ways (since they are the same). Therefore, we need to multiply the previous result by 6 to account for the different arrangements of the vowels.
So, the final answer is 7560 * 6 = 45,360.
Therefore, the number of different ways the letters of the word 'MATHEMATICS' can be arranged such that the vowels always come together is 45,360.
The correct answer is option C) 120,960.