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how many words formed ACCIDENT without changing relative order of vowels??
Read Solution (Total 26)
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- Vowels: AIE = 1, since order of vowels must not be changed, so 3! should not be multiplied.
Rest: CCDNT = here we have 5 terms, with 1 common term 'C'.
So according to me ans should be :
(5+1)!/2!
= 6!/2!
=360 - 10 years agoHelpfull: Yes(35) No(2)
- 3! * (5!/2!)=360
- 10 years agoHelpfull: Yes(13) No(2)
- count no of vowels and no of consonants at first..3 and 5 but consonants have c 2 times (note)..now take vowels as 1..so now there are 6 words along with consonants..now that can be arranged in 6! ways..but there is c 2 times ..so we will have to divide it by 2! till now the ans is 6!/2! now we should not change the relative order of vowels so we can't interchange them..so there will be only 1 way of putting it..so multiply it with 1! so the ans is 6!/2! * 1! i.e 360
- 10 years agoHelpfull: Yes(7) No(2)
- Ans:360
3! *5!/2!=720/2
=360 - 10 years agoHelpfull: Yes(6) No(2)
- Consider all vowels as one letter AIE as X
X C C D N T
6!*3
- 10 years agoHelpfull: Yes(5) No(4)
- I dont understand why people are treatin AIE as single unit,despite of question saying relative order of vowels should not be changed
i.e we can have letters between A I E
EX ADNICCET - 10 years agoHelpfull: Yes(5) No(0)
- Excluding vowels there are 5 letters and can be written in 5!/2!(as c occurs twice)
And further 3 vowels can be arranged in 3! ways
Total no. of ways=(5!/2!)*3!=360 ways - 10 years agoHelpfull: Yes(2) No(0)
- count AIE as one term
The rest 5 terms are CCDNT
so ans should be (5+1)!/2!
=6!/2!
=360 - 10 years agoHelpfull: Yes(2) No(0)
- the ans will be=5!/2!
- 10 years agoHelpfull: Yes(1) No(0)
- 5p5*3p3/2p2=360
- 10 years agoHelpfull: Yes(1) No(1)
- 8!/(3!.2!)=3360
Consider A,E,I to be blank spaces which are identical and can not rearrange among themselves as they have to appear as A then E then I and C,C,D,N,T can be anywhere in between or at sides. - 10 years agoHelpfull: Yes(1) No(1)
- Oops! Ans should be 3360 words
8P5 / 2! = 3360 - 6 years agoHelpfull: Yes(1) No(0)
- 8!/2!=8x7x6x5x4x3=2016
- 10 years agoHelpfull: Yes(0) No(4)
- Ans:3!*5!
vowels A E I
consonants C C I D N T - 10 years agoHelpfull: Yes(0) No(2)
- sorry the above i submitted was wrong
- 10 years agoHelpfull: Yes(0) No(0)
- Two ways
ACCIDENT
ACCIDETN - 10 years agoHelpfull: Yes(0) No(4)
- order should not be changed thats all... 1st out of 8 remaining arrange in 8p5 ways.. but two c's so divide with 2! and remaining arrange only in 1 way
- 10 years agoHelpfull: Yes(0) No(0)
- 8-(5+1)=6!/2!=360
- 10 years agoHelpfull: Yes(0) No(0)
- (5^4)*5!/2!
- 10 years agoHelpfull: Yes(0) No(0)
- 3!*(6!/2!)=2160
- 10 years agoHelpfull: Yes(0) No(0)
- but ACIDENTC can also be a soln. the vowels need not be together , cn anyone help me with this
- 10 years agoHelpfull: Yes(0) No(0)
- i is not a consonant @karthikeyank
- 10 years agoHelpfull: Yes(0) No(0)
- let vowels should be in relative order AEI.
=1!*(6!/2!)
=720/2
=360
- 10 years agoHelpfull: Yes(0) No(0)
- vowels=AEI should be considered as 1 letter
constants=CCDNT these 5 letters can be arranged in 5 ways and the letter c is repeated so 2!
so totaly 6 letters can be arranged in 6p6/2!=360 - 10 years agoHelpfull: Yes(0) No(1)
- AIE = 1 , and rest of the alphabets = 5
so, total no. of words = (5+1)!/2!=360 - 10 years agoHelpfull: Yes(0) No(1)
- Ans: 840 words.
Calculation: 8P5 / 2!
Explanation:
There are 8 letters, consisting of 5 consonants (2 repeating) and 3 vowels.
The relative order of vowels should not change, i.e. the vowels A, I, E should follow the order among them. In other words, A should come first, followed by I and finally E. But, they need not be together.
So, we could first arrange the 5 consonants in the 8 available places. Then, the remaining 3 places will automatically filled by the vowels in the particular order.
5 Consonants can be filled in 8 places in 8P5 ways.
Since 2 of them repeat, divide by 2!
Hence 8P5 / 2! ways or 840 ways
The arrangement of vowels have to happen in the remaining places in the original order, so they will not create additional ways.
So ans is 840 ways - 6 years agoHelpfull: Yes(0) No(0)
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