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Recent questions in Permutations and Combinations
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JEEMAIN and NEET
>>
Mathematics
>>
Class11
>>
Permutations and Combinations
The no. of rectangles in a chess board is ?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 27, 2013
by
rvidyagovindarajan_1
1
answer
In a tournament, each participant should play one game with other .Two participants fell ill after playing 3 games.each. If total games played is 84, the no. of participants in the tournament is ?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 27, 2013
by
rvidyagovindarajan_1
1
answer
In an election no. of candidates exceeds the number to be elected by 2. If a man can vote in 56 ways, then the no. of candidates is
jeemain
math
class11
ch7
permutations-and-combinations
combinations
difficult
asked
Aug 27, 2013
by
rvidyagovindarajan_1
1
answer
The number of ways in which we can select a committee from 4 men and 6 women so that the committee includes at least two men and at least twice as many women as men is?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 27, 2013
by
rvidyagovindarajan_1
1
answer
Ten persons are to speak in a meeting. The no. of ways in which this can be arranged if A wants to speak before B and B wants to speak before C, is ?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
medium
asked
Aug 27, 2013
by
rvidyagovindarajan_1
1
answer
In how many ways can 10 different marbles be distributed between 2 boys so that one of them get 7?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 20, 2013
by
rvidyagovindarajan_1
1
answer
In how many ways can 3 girls and 9 boys can be seated in two vans having 3 numbered seats in the front and 4 numbered seats at the back so that the 3 girls are to be seated together in the back row?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
difficult
asked
Aug 20, 2013
by
rvidyagovindarajan_1
1
answer
How many numbers are there between 20000 and 30000 in which the digits are 2,3,5,6,7 and each digit can be repeated any number of times.
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
easy
asked
Aug 20, 2013
by
rvidyagovindarajan_1
1
answer
Find the number of rectangles in the figure.
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 20, 2013
by
rvidyagovindarajan_1
1
answer
The largest natural numer $n$ for which $(33)!$ is divisible by $2^n$ is ?
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
difficult
asked
Aug 20, 2013
by
rvidyagovindarajan_1
1
answer
In how many ways can 7 plus (+) signs and 4 minus (-) signs can be arranged in a row so that no two minus signs are together?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 20, 2013
by
rvidyagovindarajan_1
1
answer
How many chords can be drawn for a circle with 21 points on the circle?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 20, 2013
by
rvidyagovindarajan_1
1
answer
A tea paty is arranged for 16 people along two sides of a long table with 8 chairs on either sides. Four men wish to sit on one side and 2 on other side. In how many ways they can be seated?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 20, 2013
by
rvidyagovindarajan_1
1
answer
How many number of times the digit '5' appear in listing the integers from 1 to 1000?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
difficult
asked
Aug 15, 2013
by
rvidyagovindarajan_1
1
answer
Five digit numbers are formed using the digits 0,1,2,3,4. Out of these numbers in how many numbers at least one number is repeated?
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
medium
asked
Aug 15, 2013
by
rvidyagovindarajan_1
1
answer
Total no. of words with or without meaning formed by 3 vowels and 3 consonants taken from 5 vowels and 6 consonants is?
jeemain
math
class11
ch7
permutations-and-combinations
easy
asked
Aug 15, 2013
by
rvidyagovindarajan_1
1
answer
The sum of the digits in unit place of all the numbers formed using 3,4,5,6 taking all at a time is?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
medium
asked
Aug 15, 2013
by
rvidyagovindarajan_1
1
answer
How many 10 digit numbers are there using the digits 1 and 2 ?
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
easy
asked
Aug 15, 2013
by
rvidyagovindarajan_1
1
answer
The number of ways in which four letters of the word $MATHEMATICS$ can be arranged is ?
jeemain
math
class11
ch7
permutations-and-combinations
difficult
asked
Aug 15, 2013
by
rvidyagovindarajan_1
1
answer
How many 6 digit numbers can be formed using the digits $1,2,3$ so that the digit 1 occur 2 times in each number?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
difficult
asked
Aug 15, 2013
by
rvidyagovindarajan_1
1
answer
The no. of points $(x,y,z)$ in space whose coordinates are negative integers and $x+y+z+12=0$ is
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
difficult
asked
Aug 15, 2013
by
rvidyagovindarajan_1
1
answer
The number of signals that can be formed using 6 flags of different colours taking 1 or more flags at a time is ?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
difficult
asked
Aug 14, 2013
by
rvidyagovindarajan_1
1
answer
How many three digit numbers that are divisible by 3 can be formed using the digits 0,1,2,3,4,5 without repeating the digits?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
difficult
asked
Aug 14, 2013
by
rvidyagovindarajan_1
1
answer
How many 9 digit numbers can be formed from the numbers 223355888 so that the odd digits occupy even positions.
jeemain
math
class11
ch7
permutations-and-combinations
permutations
easy
asked
Aug 14, 2013
by
rvidyagovindarajan_1
1
answer
The number of ways in which a cricket team of eleven players can be selected from 22 players which includes a particular two and excludes a particular 4 players is
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 14, 2013
by
rvidyagovindarajan_1
1
answer
Four dice are rolled. The no. of possible outcomes in which at least one dice shows 2 is ?
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
easy
asked
Aug 14, 2013
by
rvidyagovindarajan_1
1
answer
In an examination a candidate has to pass in each of the four subjects. In how many ways he can fail?
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
medium
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
At an election a voter may vote for any no. of candidates but not greater than the number to be elected. There are 10 candidates and 4 are to be elected. If every voter votes for atleast one candidate, then no. of ways in which a voter can vote is?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
difficult
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
The no. of positive integers satisfying the inequation $^{n+1}C_{n-2}-^{n+1}C_{n-1}\leq 50$ is ?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
If one person shakes hand with another only once,the no. of hand shakes is 66. How many persons are there?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
A polygon has 44 diagonals. The no. of sides of the polygon = ?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
The no. of 7 digit numbers that can be formed using the digits $1,2,3,2,3,3,4$ is?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
medium
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
The no. of ways in which 6 persons can be seated in a circular table so that two particular persons are never together is?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
medium
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
$^{50}C_4+\sum\limits^{6}_{r=1}$$ ^{56-r}C_3=?$
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
The no. of ways in which 6 men and 5 women can sit at a round table so that no two women sit together is?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
easy
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
There are $10$ lamps in a hall. Each of them can be switched on independently. The no. of ways in which the hall can be illuminated is?
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
medium
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
If $T_n$ denotes no. of triangles formed by the vertices of a regular $n$ sided polygon and if $T_{n+1}-T_n=21$, then $n=?$
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
The no. of diagonals of $n$ sided polygon =?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
1.1! + 2.2! + 3.3! + ......... + n.n! = ?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
difficult
asked
Aug 13, 2013
by
rvidyagovindarajan_1
1
answer
What is the 7th word in the arrangement of the permuted words formed by the letters of the word 'SWISS' as per the alphabetical order as in dictionary?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
medium
asked
Aug 12, 2013
by
rvidyagovindarajan_1
1
answer
The no. of arrangements of the letters of the word 'BANANA' in which the 2 $N^s$ do not come adjacently is?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
easy
asked
Aug 12, 2013
by
rvidyagovindarajan_1
1
answer
The no. of arrangements of the letters of the word 'BANANA' in which the 2 $n^s$ do not come adjacently is?
jeemain
math
class11
ch4
permutations-and-combinations
easy
asked
Aug 12, 2013
by
rvidyagovindarajan_1
0
answers
The letters of the word 'COCHIN' are permuted and all the permutations are arranged in alphabetical order as in Dictionary. The no. of words that appear before the word 'COCHIN' is?
jeemain
math
class11
ch7
permutations-and-combinations
permutations
medium
asked
Aug 12, 2013
by
rvidyagovindarajan_1
1
answer
There are 12 points in plane out of which 5 points are collinear. How many different lines can be drawn using these points?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 12, 2013
by
rvidyagovindarajan_1
1
answer
There are 12 points in a plane out of which 7 points lie on a st. line (collinear). How many triangles can be formed using these points as vertices?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 12, 2013
by
rvidyagovindarajan_1
1
answer
The total no. of ways in which 5 balls of different colours can be distributed among 3 persons so that each person gets atleast one ball is ?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
asked
Aug 12, 2013
by
rvidyagovindarajan_1
1
answer
Four couples (husband and wife) decide to form a committee of 4 members. How many ways this can be done so that no couple finds a place.
jeemain
math
class11
ch7
permutations-and-combinations
combinations
easy
asked
Aug 11, 2013
by
rvidyagovindarajan_1
1
answer
The number of positive integral solutions of the equation $xyz=30$ is ?
jeemain
math
class11
ch7
permutations-and-combinations
fundamental-principle-of-counting
easy
asked
Aug 11, 2013
by
rvidyagovindarajan_1
1
answer
The studens of a class take a test having 10 questions of true or false objective type questions. No two students answer are same. None of the students has got all the answers correct. How many students are there in the class.
jeemain
math
class11
ch7
permutations-and-combinations
fundamental- principle-of- counting
difficult
asked
Aug 9, 2013
by
rvidyagovindarajan_1
1
answer
The number of seven digit integers whose sum of the digits is ten, formed by using the digits 1, 2 and 3 only is
jeemain
math
class11
ch7
permutations-and-combinations
permutations
medium
asked
Aug 9, 2013
by
rvidyagovindarajan_1
1
answer
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