Recent questions tagged permutations-and-combinations

The number of ways of dividing 15 men and 15 women into 15 couples each consisting of a man and woman is

asked May 19, 2014 by sreemathi.v

1 answer

How many words can be made from the letters of the word MONDAY assuming that no letter is repeated if (c) All letters are used but the first is a vowel

asked May 19, 2014 by sreemathi.v

1 answer

How many words can be made from the letters of the word MONDAY assuming that no letter is repeated if All letters are used at a time

asked May 19, 2014 by sreemathi.v

1 answer

How many words can be made from the letters of the word MONDAY assuming that no letter is repeated if 4 letters are used at a time

asked May 19, 2014 by sreemathi.v

1 answer

Using the digits 1,2,3,4,5,6,7,a number of 4 different digit is formed.Find (d) How many of these are exactly divisible by 4

asked May 19, 2014 by sreemathi.v

1 answer

Using the digits 1,2,3,4,5,6,7,a number of 4 different digit is formed.Find (c) How many numbers are exactly divisible by 25

asked May 19, 2014 by sreemathi.v

1 answer

Using the digits 1,2,3,4,5,6,7,a number of 4 different digit is formed. Find How many numbers are exactly divisible by 2

asked May 19, 2014 by sreemathi.v

1 answer

Using the digits 1,2,3,4,5,6,7,a number of 4 different digit is formed.Find (a) How many numbers are formed

asked May 19, 2014 by sreemathi.v

1 answer

There are 10 professors and 20 lecturers out of whom a committee of 2 professors and 3 lecturer is to be formed.Find (d) In how many ways a particular lecturer is excluded

asked May 19, 2014 by sreemathi.v

1 answer

There are 10 professors and 20 lecturers out of whom a committee of 2 professors and 3 lecturer is to be formed.Find In how many ways a particular lecturer is included

asked May 19, 2014 by sreemathi.v

1 answer

There are 10 professors and 20 lecturers out of whom a committee of 2 professors and 3 lecturer is to be formed.Find In how many ways a particular professor is included

asked May 19, 2014 by sreemathi.v

1 answer

There are 10 professors and 20 lecturers out of whom a committee of 2 professors and 3 lecturers is to be formed. In how many ways can a committee be formed?

asked May 19, 2014 by sreemathi.v

1 answer

Five boys and five girls form a line.Find the number of ways of making the seating arrangement under the following condition : All the girls are never together

asked May 19, 2014 by sreemathi.v

1 answer

Five boys and five girls form a line.Find the number of ways of making the seating arrangement under the following condition : All the girls sit together

asked May 19, 2014 by sreemathi.v

1 answer

Five boys and five girls form a line.Find the number of ways of making the seating arrangement under the following condition : No two girls sit together

asked May 19, 2014 by sreemathi.v

1 answer

Five boys and five girls form a line.Find the number of ways of making the seating arrangement under the following condition : Boys and girls alternate

asked May 19, 2014 by sreemathi.v

1 answer

There are 3 books on mathematics 4 on physics and 5 on english .How many different collections can be made such that each collections consists of : Atleast one book of english

asked May 19, 2014 by sreemathi.v

1 answer

There are 3 books on mathematics 4 on physics and 5 on english .How many different collections can be made such that each collections consists of : Atleast one book of each subject

asked May 19, 2014 by sreemathi.v

1 answer

There are 3 books on mathematics 4 on physics and 5 on english .How many different collections can be made such that each collections consists of : one book of each subject

asked May 19, 2014 by sreemathi.v

1 answer