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# (a) When vowels occupy the even positions. (b) Both L do not occur together.

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a) 60

b) 5880.?
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bhai  can you tell answer of this also , How many different words can be formed using all the letters of the word ALLAHABAD
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7560.
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ok almost all of us solve this  by using 9! / 4! 2! = 7560

but bro they are asking different words so we have to subtract -1 becuase allahabad is also there in 7560   , so  7560-1 = 7559  what do u think ?
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@sumit goyal 1 see, this is the question of permutation and combination where they will ask what are the different permutation of the given word and You have to find all those permutations possible, and the word given in the question is also a permutation of the given word, and whatever answer you calculate contain that permutation also.

So, they will ask you different permutations which in your case you have calculated.

Secondly,

they are asking different words so we have to subtract -1 becuase allahabad is also there in 7560   , so  7560-1 = 7559  what do u think ?

If they will say like this:-

What are the different numbers of permutation of the word ALLAHABAD other then given permutation.

then, in this case, you have to subtract 1, because in 7560 permutations it is also calculated, So, to obtain differently we have to subtract 1.

But not in this case.

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No, you don't need to subtract 1 from the result, ALLAHABAD is also a different word, which is not present in remaining 7559 results.
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In how many ways we can rearrange letter of word ALLAHABAD  then we have to subtract -1
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bro @stblue  i sent you a link if question is ,in how many ways we can rearrange letters of word allahabad then we have to subtract -1
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Yes yes true, when we talk about arrangement we count the word, and when we talk about rearrangement we exclude the given word. I will post another example from arun sharma, which will clear this concept.
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in case of "re -arrangement" we have to subtract 1 not arrangement
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Subtracting 1 means we are excluding that one given arrangement from the total no of arrangements.

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Here is an example from Arun sharma, Have a look

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thnks bro
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Are you sure we subtract -1 ? I have not seen any such question except the example you posted
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wo clear hgya , we dont have to subtract

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