Q: 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’. Text Solution 3604807205040 Answer : C Solution : The word 'LEADING ' has 7 different letters. <br> when the vowels EAI are always together , they can be supposed to form one letter. <br> then , we have to arrange the letters LNDG (EAI) . <br> Now , 5(4+1=5) letters can be arranged in 5! = 120 ways . the vowels (EAI) can be arranged among themselves in 3! = 6 ways. <br> `therefore ` Required number of ways `=(120 xx6)= 720`
Discussion :: Permutation and Combination - General Questions (Q.No.2)
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