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Number of words of 4 letters that can be formed with the letter of the word IITJEE is...............
the answer is 468
answer is 256
Ans. Is 14!!!
» four distinct letters= (4C4)
»Of form (aabb)= (2C1).(4C2)
»Of form aabc= (2C2)
So 0n adding it comes 14.
is that 6*6*6*6=1296? is that the answer?
72
there will be following cases
1) words form by letters I,T,J,E
we will use permutation
4! =24
2) words form by only I,I,E,E
there would be following arrangement
IIEE another word by flipping the letters I,E
IEEI another word by flipping the letters
EIEI another word by flipping the letters
it makes total of 6
3) words formed by 2 I''S T,J,E
first select 2 places out of four so we use combination
3C2 and then arrange 3 letters in 2 places
so finally we get
4C2*6 = 36
4) words formed by 2 E''S AND T,J,E
so again 36
so add all cases you will get the answer
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