Question
In how many different ways can the letters of the word
‘VARIOUS’ be arranged in such a way that the vowels occupy only the odd positions?Solution
There are 7 different letters in the given word, out of which there are 4 vowels and 3 consonants. Let us mark these positions as under [1][2][3][4][5][6][7] Now, 4 vowels can be placed at any of 4 places out of 4 i.e., 1,3,5,7 Number of ways of arranging the vowels = 4P4 = 4! = 24 ways Also, the 3 consonants can be arranged at the remaining 3 positions Number of ways of these arrangements = 3P3 = 3! = 6 ways Therefore, total number of Ways = 24 × 6 = 144 ways.
'Aman' and 'Bhanu' together can complete a work in 7.2 days. Both of them started the work but 'Bhanu' left the work after 3 days and remaining work was...
3 women and 1 girl together can complete a work in 25 days. 2 women and 5 girls can together complete half of the same work in 9 days. Find the time ta...
18 men can finish a work in 15 days by working 8 hours a day. How many more men are needed to finish the work in 12 days by working 6 hours a day?
P can do a piece of work in 15 days, Q can complete double the work in 30 days and R can do the work in 25 days. If all of them together earn Rs. 2600, ...
A person can make 48 flower pots in an hour. Working for 3 hours daily, he has total 660 flower pots that to be made in 4 days time. To accomplish this ...
Efficiency of a man is 25% more than that of a woman. (2n + 4) men working 8 hours a day can complete a task in 18 days, whereas (3n - 2) women working...
Pawan, Bittu, and Raju can individually complete a task in 36 days, 60 days, and 30 days, respectively. They all begin working together, but Raju stops ...
A can do a work in 12 days and B can do it in 18 days. In how many days will they finish together?
45 men can complete 3/5 part of a work in 8 days working 9 hours a day. How many women can complete rest of the work if they work for 6 hours a day for ...