Q Form a 3- digit number which should be even by using 1, 2, 3, 6, 8, and 9. Note that, repetition of digits is allowed. Q Find the total number of 4- letter code formed by using the 10 English alphabets, i.
Assume that the repetition of the letters of English alphabet is not allowed. Q Find the total number of 5- digit telephone numbers formed by using the numbers from 0 to 9. Note that, each of the telephone number will start with byjus maths class 7 chapter 11 ms and the repetition byjus maths class 7 chapter 11 ms the numbers is not allowed.
Q Consider a scenario when a person tosses a coin. He tosses the coin for two times and every time the outcome of the toss is recorded by one of his friend. Find the total number of possible outcomes of the coin his friend will record. Q Consider 5 flags which are of different colors. Find the total possibility of getting different signals.
Note that, each of the signals requires the use of any two flags at the same time, one byjus maths class 7 chapter 11 ms the. Q If there is no repetition of numbers, then find the total of 3- digit numbers formed by using byju from 2 to 9. Q Find the total number of 4- digits numbers where there is no repetition of digits.
Q Find the total number of 3- digit number which is even and is formed by using the digits 2, 3, 4, 5, 6, 7 and 8. Note that repetition of digit is restricted. Q How many 4- digit coass will bgjus formed by using the byjus maths class 7 chapter 11 ms 2, 3, 4, 5 and 6.
Note that, repetition of digits is not allowed. Find among byjue numbers, how many numbers will be even number? Q Consider a committee with 9 persons, in how many ways can we choose a chairman and a vice chairman? Note that, a person can hold only one position at a time. Note that, repetition of the word is restricted. Note that, repetition of the word is restricted, if. Q Find total number of chords vyjus can be drawn through 21 points on the circle.
Q Find the number of ways in which a team of 2 boys and byjus maths class 7 chapter 11 Class 6 Maths Byjus Chapter 1 Contain ms girls can be selected from the group of 5 boys and 4 girls. Q In how many ways will 9 balls be selected from 7 red balls, 6 blue balls and 5 white balls if every time 3 balls of different colors byjus maths class 7 chapter 11 ms selected?
Q Find out the number of byjus maths class 7 chapter 11 ms of 5 cards from a deck of 52 cards. Assume that there is at least one ace in each of the combinations. Byjjus Find the number of ways by which one can select a cricket team of 11 players from a bunch of 17 players among which only 5 players can bowl if every cricket team of 11 players must have exactly 4 bowlers. Q There are 6 black and 5 red balls. Find the number of ways through which 3 black and 3 red balls will be selected.
Q Find the number of ways by which a chapteg can choose a program of 5 courses, if there are options of 10 courses and for every student 2 courses are made compulsory.
Q Find the number of words, which can be either meaningful or meaningless, which will be formed by using all of the letters of the word EQUATION at a time such that both the vowel and the consonant will occur.
Q There are 10 boys and 5 girls through which a committee with 7 dhapter has to be formed. Now, find the number of ways in which this might be created when the committee formed consists of:. Q Find the total number of 6- digit numbers formed by using the digits 0, 2, 3, 4, 5 and 6 which should be divisible by Note that, the repetition of digit is not allowed.
Q It is known that the English alphabet has 21 consonants and 5 vowels. Find the number of words formed with 4 different consonants and 3 different vowels from the English alphabet. Q There are 12 questions in the question paper of an examination which is mainly divided into two parts, say, part-I and part-II, each having 4 and 8 questions, respectively.
There is a condition given in the question paper that the student has to attempt at least 8 questions for sure, selection 3 from each section. Now, find the number of Class 9 Maths Chapter 8 Byjus Number ways in which a student can select the questions in the question paper.
Q Find the number of ways of 5- card combinations from a deck of 52 cards. Note that, among those 5 cards, there must be exactly one king in the combination. Q Consider a situation in which 7 men and 6 women needs to be seated in a row in such a way that the women will occupy the even places. Q There are byjuus students in a class from which 8 students will be chosen for an exclusion party. Find the number of ways by which the exclusion party will be chosen.
Permutations and Combinations Class 11 Ex 7. Exercise- 7. Q Is 3! Note that, repetition of the word is restricted, if i At a time, 3 letters can be used.
Now, find the number of ways in which this might be created when the committee formed consists of: i Exactly 4 girls ii at least 4 girls iii almost 4 girls? RD Sharma Class 12 Solutions. Watch Youtube Videos.
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