How many ways can the letters of words mobile be arranged so that at least two consonants remains together?

In how many different ways, can the letters of the words EXTRA be arranged so that the vowels are never together?

  1. 168
  2. 48
  3. 120
  4. 72

Answer (Detailed Solution Below)

Option 4 : 72

Calculation:

EXTRA → Total number of words = 5 and total number of vowels = 2

The word EXTRA can be arranged in 5! ways = 120 ways

The word EXTRA can be arranged in such a way that the vowels will be together = 4! × 2!

⇒ (4 × 3 × 2 × 1) × (2 × 1)

⇒ 48 ways

The letters of the words EXTRA be arranged so that the vowels are never together = (120 - 48) = 72 ways.

∴ The letters of the words EXTRA be arranged so that the vowels are never together in 72 ways.

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(#M40157302) TCS Numerical Ability question Keep an EYE

in how many ways can letter of word MOBILE can be arranged so that atleast two consonant remains together

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Previous Question: A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day? Next Question: what is the minimum value of abs(81m-576n+510) as m,n take all integer values?Here,abs is absolute value function (i.e.,if x>0, then abs(x)=x and if x<0,then abs(x)=-x)

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How many ways can the letters of words mobile be arranged so that at least two consonants remains together?

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Time: 00:02:42

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How many ways can the letters of the word mobile be arranged so that the consonants always occupy the odd places?

Correct option (B) 36 The word 'MOBILE' has three even places and three odd places. It has 3 consonants and 3 vowels. In three odd places we have to fix up 3 consonants, which can be done in 3P3 ways.

How many ways can the letters of the word mobile be arranged so that consonants always remain together?

(arrange consonants) = 6 * 4* 6= 144.

How many ways can the letters of the word mobile be arranged?

The number of possible arrangements is 6*5*4*3*2*1 = 6! = 720.

How many different ways can the letters of the word combine be arranged so that the vowels always come together?

The number of ways the word TRAINER can be arranged so that the vowels always come together are 360.