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Syllabus

The letters of the word 'RANDOM' are written in all possible ways and these words are written out as in a dictionary.Find the rank of the word 'RANDOM'?

The no. of 5-letter words formed with the letters of the word CALCULUS are?

A COLLEG AWARDED 38 MEDALS IN FOOTBALL,15 IN BASKET BALL AND 20 IN Cricket .if these medals went to a total of 58 men and only 3 men got medals in all the three sports hw many received medals in exactly two of the sports? plz answer wid explaination

if letters of word 'MOTHER' are written in all possible orders and these words are written out as in dictionary find the rank pof the word 'MOTHER'.

In how many ways can a lawn tennis mixed double be made up from seven married couples if no husband and wife play in the same set?

In how many ways can the letters of the word PERMUTATIONS be arranged if the

(i) words start with P and end with S, (ii) vowels are all together,

(ii) there are always 4 letters between P and S?

In how many ways can 3 prizes be distributed among 4 boys, when: (i) no boy gets more than one prize? (ii) a boy may get any number of prizes? (iii) no boy gets all the prizes?

how many 4 letter words can be formed from the word MORADABAD?

In how many ways can final 11 players be selected from 15 cricket players-

a) there is no restriction

b) one of them must be included

c) one of them who is in bad form must be always be excluded

d) twof them being leg spinners one and only one must be included.

how many numbers greater than 1000000 can be formed by using the digits 1,2,0,2,4,2,4?

How many different words beginning and ending with a consonant, can be made out of letters of the word ' EQUATION ' ?

a boy has 3 library tickets and 8 books are of his interest. Of these 8,he doesn't want to borrow maths part 2, unless maths part 1 is also borrowed? In how many ways can he choose the 3 books to be borrowed ?

^{m+n}P_{2 }=90 AND^{m-n}P_{2}=30In how many ways can 5girls and 3 boys be seated in a row so that no two boys are together

In how many ways, can the letters of the word PENCIL be arranged so that

1) N is always next to E

2) N and E are always together.

How many words,with or without meaning,each of 3 vowels and 2 consonants,can be formed from the letters of word 'INVOLUTE'?

Find the number of ways in which 5 boys and 5 girls be seated in a row so that

1) No 2 girls mays sit together

2) All girls sit together and all boys sit together.

3) all girls never sit together.

how many four letter word can be form using letter of word "INEFFECTIVE"

(i) 3 same 1 different

(ii) 2same of one kind , 2 same of other kind

(iii)2 same, 2distinct

(iv) All different

How many natural numbers not exceeding 4321 can be formed with the digits 1,2,3 and 4,if the digits can repeat?

The answer is 229.I just need the steps.

A letter lock consists of three rings each marked with 10 different letters. In how many ways it is possible to make an unsuccessful attempt to open the lock?

A committee of 7 has to be formed from 9 boys and 4 girls. In how many ways can this be done when the committee consists of:

(i) exactly 3 girls? (ii) atleast 3 girls? (iii) atmost 3 girls?

If a=

^{m}C_{2},then find the value of^{a}C_{2}...How many numbers are there between 100 to 1000 such that at least one of their digit is 7 ?

are consecutive and ${Q}_{n}$ is the corresponding figure when they are in a circle. If ${P}_{n}$ — ${Q}_{n}$ = 6, then find the value of

n?in how many can the letters of the word'FAILURE' be arranged so that the consonants may occupy only odd positions

A motorcycle licence plate has two letters followed by four numbers. How many plates can be made without duplicating? ( there are no plates with number zero)

Please give the full solution.

The letters of the word ‘ZENITH’ are written in all possible orders. How many words are possible if all these words are written out as in a dictionary? What is the rank of the word ‘ZENITH’?

How many four letter words can be formed using the letters of the word 'FAILURE', so that (1) F is included in each word ? (2) F is not included in any word ?

If there are 6 periods in each working day of a school, in how many ways can one arrange 5 subjects such that each subject is allowed at least one period?

while solving this problem why we write

^{6}P_{5}??????if

^{n}C_{r}- 1 = 36,^{n}C_{r}= 84 and^{n}C_{r+1 }= 126, then find^{ r}C_{2}.[

HINT: form eqn using^{n}Cr/^{n}C_{r+1}and^{n}C_{r}/^{n}C_{r-1}to find the value of r.]A polygon has 35 diagonals . Find the number of its sides .

( ans. 10 )

_{n}denote the number of triangles which can be formed using the vertices of a regular polygon of 'n' sides. If T_{n+1}-T_{n}=21, then 'n' equals -1. if 2 people say, X and Y, must sit on the same side

2. X and Y must seat on the opposite side

3. if 3 people, X Y and Z must sit on the side facing the window.

1.Find the number of ways in which a mixed double tennis game can be arranged between 10 players consisting of 6 men and 4 women

2. In a hockey tournament , a total of 153 matches were played. If each team played one match with every other team, find the total number of teams that participated in the tournament

In how many distinct permutations of the letter in "MISSISSIPPI" do the four I's not come together?

a.84

b.12 c.48 d.60(ans is a.)

In how many ways can one select a cricket team of eleven from 17 players in which only 5 players can bowl if each cricket team of 11 must include exactly 4 bowlers?

how many numbers greater than 1000,but not greater than 4000 can be formed with digits 0,1,2,3,4 if:i)Repetition of digits is allowed? ii)Repetition og digits is not allowed?

1) The number of different words that can be formed with 12 consonents and 5 vowels by taking 4 consonents and 3 vowels in each word is?

Eight guests have to be seated 4 on each side of a long rectangular tabel. 2 particular guests desire to sit on one side of the table and 3 on the other side. The number of ways in which the sitting arrangements can be made is?

3) A question paper contains 6 questions, each having an alternative. The number of ways an examine can answer one or more questions is?

4)A candidate is required to answer 6 out of 12 questions which are divided into two groups containing 6 questions in each group. He is not permitted to attempt not more than four from any group. The number of choices are?

5) The results of 8 matches (win,loss or draw) are to be predicted. The number of different forecasts containing exactly 6 correct results is?

6)The number of different factors the number 75600 has is?

7)The number of ways a person can contribute to a fund out of 1 ten-rupee note, 1 five-rupee note, 1 two-rupee and 1 one rupee note is?

8)The number of ways in which 9 things can be divided into two groups containing 2,3 and 4 things respectively is?

9) The number of even numbers greater than 300 can be formed with digits 1,2,3,4,5 without repetition is?

10)5 letters are written and there are five letter-boxes. The number of ways the letters can be dropped into the boxes, are in each?

1. at least 2 girls are included

2. at most 2 girls are included

How many natural numbers less than 1000 can be formed from the digits 0,1,2,3,4,5 when a digit may be repeated any number of time?

How many numbers are there between 100 and 1000 such that 7 is in the units place? (repetition of digits is allowed)

^{28}C_{2r}:^{24}C_{2r-4}= 225 : 11 , find r. pls solve it soon thank ew......find the number of ways in which a] a selection b] an arrangement of 4 letters can be made using the word PROPORTION ???

- PL ANSWER..

1.PROVE n! /(n-r)!=n(n-1)(n-2)...(n-r+1)

2. (n-r+1).n!(n-r+1)!=n!/(n-r)!

A man has 3 jackets, 10 shirts, and 5 pairs of slacks. if an outfit consists of a jacket, a shirt, and a pair of slack, how many different outfits can the man make ?

In how many ways can the letters of the word ASSASSINATION be arranged so that all the S’s are together?

Determine the number of 5 card combinations out of a deck of 52 cards if there is exactly one ace in each combination.

how many no. of 4 digits can be formed with the digits 1,3,3,0.find their sum

in how many ways can the letters of the word ALGEBRA be arranged without changing the relative order of the vowels and consonants?

find no. of combinations and permutations of the 4 letter taken from the word "EXAMINATION"

if all the letters of the word AGAIN bre arranged as in a dictonary, What is the 50th word?

prove that 33! is divisible by 2^15.what is the largest integer n such that 33! is divisible by 2^n?

a bit is either 0 or 1,a byte is a sequence of 8 bits find,

(a) the number of bytes that can be formed

(b) the number of bytes that begin with 11 and ends with 11

(c) the number of bytes that begin with 11 and do not end with 11

(d) the number of bytes that begin with 11or end with11

How many words, with or without meaning, can be formed using all the letters of the word EQUATION at a time so that the vowels and consonants occur together?

How many different words can be formed from the letters of the word ‘GANESHPURI’? in how many of these words: (i) the letter G always occupies the first place? (ii) the letters P and I respectively occupy first and last place? (iii) the vowels are always together? (iv) the vowels always occupy even places?

A cricket team of 11 players is to be chosen from 16 players which includes 5 bowlers and 2 wicket keepers. How many ways can a team be selected if each team must have 3 bowlers and 1 wicket keeper?? Plzzz answer!!

the letter of the worde SURITI are written in all possible orders and these words are written out as in dictionary.find the rank of the word suriti.

Distinct 3 digit numbers are formed using only the digits 1,2,3,4 with each digit at most once in each number thus formed.Find the sum of all possible numbers so formed ?

FIND r if:-

5 p

_{r}= 2^{6}p_{r-1}If 'a' denotes the number of permutations of (x+2) things taken all at a time, 'b' the number of permutations of 'x' things taken 11 at a time and 'c' the number of permutaions of (X-11) things taken all at a time such that a=182bc, find the value of x??

if tanx =b/a , then what is the value of acos2x+bsin2x ?

how many natural numbers less than 1000 can be formed with the digits 1,2,3,4and 5 if

1)no digits is repeated

2)repetition of digits is allowed

In an examination, a question paper consists of 12 questions divided into two parts i.e., Part

Iand PartII, containing 5 and 7 questions, respectively. A student is required to attempt 8 questions in all, selecting at least 3 from each part. In how many ways can a student select the questions?if

^{n}p_{4}=360 than find n18 guest have to be seated half on each side of a long table. 4 particular guests desired to sit on one particular side & 3 others on the other side. Determine the no. of ways.

A mint prepares metallic calendars specifying months,dates and days in the form of monthly sheets(one plate for each month).How many types of calendars should it prepare to serve all the possibilities in future years?

9 PERSONS ENTER A LIFT FROM THE GROUND FLOOR OF A BUILDING WHICH STOPS IN NINE FLOORS.(EXCLUDING GROUND FLOOR). IF IT IS KNOWN THAT THE PERSONS WILL LEAVE THE LIFT IN GROUPS OF 2, 3, 4 IN DIFFERENT FLOORS.IN HOW MANY WAYS CAN THIS HAPPEN

How is

^{n}C_{0}+^{n}C_{1}+^{n}C_{2+}....+^{n}C_{n}=2^{n}there are 12 true-false questions in examination. how many sequences of answers are possible?