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

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Solution

The correct option is B 1440
The four consonants can be written in 4! ways i.e., 24 ways, The three vowels can be written in 3! ways. i.e, 6 ways. Since no two vowels can come together therefore vowels can be inserted in any three places out of the five places available, such as

i.e,in 5C3 waysi.e.,10ways

Total number of arrangements required

=24×6×10=1440


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There are five stations on a railway line. What is the number of different journey tickets that are required for railway authorities?

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5 1506

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If each of the vowels in the word 'MEAT' is kept unchanged and each of the consonants is replaced by the previous letter in the English alphabet, how many four-lettered meaningful words can be formed with the new letters, using each letter only once in each word?

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In a bag containing red, green and pink tokens, the ratio of red to green tokens was 5 : 12 while the ratio of pink to red tokens was 7 : 15. What was the ratio of green to pink tokens?

A] 25 : 28 B] 36 : 7
C] 8 :25 D] 12 : 7

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The ratio of the members of blue to red balls in abag is constant. When there were 44 red balls, the number of blue balls was 36. If the number of blue balls is 54, how many red balls will be in the bag?

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If each vowel of the word NICELY is changed to the next letter in the English alphabetical series and each consonant is changed to the previous letter in the English alphabetical series and then the alphabets are arranged in alphabetical order, which of the following will be fourth from the left?

Answer & Explanation Answer:

Explanation:

Thus after arranging the letters as per English alphabetical series; we get; Thus 4th letter from the left end will be K.

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How many such pair of letters are there in the word ‘TROUBLED’ which have as many letters between them in the word as they have between them in the English alphabet?

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If it is possible to make a meaningful word with the first, the seventh, the ninth and the tenth letters of the word RECREATIONAL, using each letter only once, which of the following will be the third letter of the word? If more than one such word can be formed, give ‘X’ as the answer. If no such word can be formed, give ‘Z’ as the answer.

Answer & Explanation Answer: D] R

Explanation:

The first, the seventh, the ninth and the tenth letters of the word RECREATIONAL are R, T, O and N respectively. Meaningful word from these letters is only TORN. The third letter of the word is ‘R’.

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6 3015

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16 persons are participated in a party. In how many differentways can they host the seat in a circular table, if the 2particular persons are to be seated on either side of the host?

A] 16! × 2 B] 14! × 2
C] 18! × 2 D] 14!

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6 3998

How many ways leading can be arranged so that vowels come together?

The word 'LEADING' has 7 different letters. When the vowels EAI are always together, they can be supposed to form one letter. Then, we have to arrange the letters LNDG [EAI]. Now, 5 [4 + 1 = 5] letters can be arranged in 5! ... Permutation-and-Combination..

How many ways can the letters of the word strange be arranged so that the vowels never come together?

number of arrangements in which the vowels do not come together =5040−1440=3600 ways.

How many arrangements can be formed by the letters of the word vowels?

=3×2×4×3×2=144.

How many words can be formed with all vowels together?

Hence, total number of words formed having all vowels together = 5 ! =[5×4×3×2×1]=120. Q. [i] there is no restriction on letters?

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