Question
History books are always together and also Geography
books are always together? Directions (Q.61 -65): In how many ways 5 History books and 7 geography books can be arranged in a row so that :Solution
Reqd. no. of ways = 5! 7! 2!
Find the quantity of methods of picking 4 cards from a set of 52 playing cards if four cards are of the same unit?
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In how many ways can the letters of the word ‘MEDICAL’ be rearranged so that the vowels never come together?
- How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "TRIANGLE"?
- How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "MONARCH"?
A letter is randomly selected from the word "DETACHMENT." What is the probability that the selected letter is a vowel?
In how many ways can 17 members be seated in two lines with seating capacity of 9 and 8 members respectively?
1.    9! ×8!
2.   �...
- A school wants to form a committee of 5 students from 6 boys and 4 girls. How many ways can the committee be formed if it must contain at least 3 boys?
In how many different ways can the letter of the word ‘JUSTICE’ be arranged?
How many different words can be formed with the letters of the word PRACTICE such that each of the word begin with E and ends with R?
From the letters of the word SNAPCAT (letters: S, N, A, P, C, A, T; where A appears twice), how many distinct 7-letter arrangemen...
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