Question
Vijay has 100 notes of Rs 50 and Rs 100. If his total
money is Rs 6500, find the number of Rs 100 notes.Solution
Let the total notes of 50 Rs = x Then the notes of 100Rs = 100-x ATQ- 50x +100(100-x) = 6500 50x +10000-100x = 6500 50x = 3500 x = 350/5 = 70 x = 70 notes Then the number of Rs 100 notes = 100-70 = 30 notes
7 children are to be selected from a group of 8 boys and 6 girls. In how many ways will the children with at most 3 girls and at least 4 boys be selected?
- A team of 6 players is to be selected from 7 men and 5 women. In how many ways can a team be formed such that at least 4 men are included?
How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "BALUSTER"?
How many unique arrangements can be made using all the letters of the word "DELUSION", ensuring that the vowels do not appear together?
Using all the letters of the word CANOER, how many words start with a vowel but end with a consonant?
- A group consists of 8 boys and 10 girls. In how many ways 5 boys and 4 girls can be chosen from the group?
A letter is randomly selected from the word "DETACHMENT." What is the probability that the selected letter is a vowel?
A team of 8 players is to be selected from a group of 7 junior players and 6 senior players. In how many ways a team having at least 6 junior players ca...
Using all the letters of the word RELIAN, how many words start with a vowel but end with a consonant?
A team of 6 members is to be formed from a group of 8 boys and 5 girls. Find the number of ways to form team such that the team consists of at most 2 gi...
Relevant for Exams:
