There are five books on Mathematics and ...

There are five books on Mathematics and 6 books on Physics in a book shop. In how many ways can a student buy : (i) a Mathematics book and a Physics book (ii) either a Mathematics book or a Physics book?

Text Solution

Verified by Experts

1)Maths`=.^5C_1`
Physics`=.^6C_1`
Total`=.^5C_1*.^6C_1=5*6=30`
2)Maths`=.^5C_1`
Physics`=.^6C_1`
Total`=.^5C_1*.^6C_1=11`.

Topper's Solved these Questions

PARABOLA
RD SHARMA ENGLISH|Exercise All Questions|86 Videos
PROBABILITY
RD SHARMA ENGLISH|Exercise All Questions|290 Videos

Similar Questions

Explore conceptually related problems

There are 6 books on mathematics, 4 books on physics annd 5 books on chemistry in a book shop. The number of ways can a student purchase either a book on mathematics or a book on chemistry, is

There are 8 math's books and 6 science books in a almirah. In how many wayscan 4 books of each subject be selected?

In how many ways can 12 books be divided in 3 students equally?

There are 11 teachers who teach Mathematics or Physics in a school, Of these, 7 teach Mathematics and 3 teach both Mathematics and Physics. How many teach Physics?

There are 3 books of Mathematics, 4 of Physics and 5 of English. How many different collections can be made such that each consists at least one book of each subject ?

In how many ways can 12 books be arranged on a shelf if 4 particular books must always be together.

In how many ways 3 books of Mathematics, 4 books of Physics and 2 books of Chemistry can be arranged on a table if all the books of one subject placed together?

In how may ways can 15 identical books of mathematics and 12 identical books of physics be placed in a row on a shelf so that tow books of physics may not be together ?

In Physics, reading a book and pushing a wall are considered to be work.

The number of ways of distributing six identical mathematics books and six identical physics books among three students such that each student gets atleast one mathematics book and atleast one physics book is (5.5!)/k , then k is..

RD SHARMA ENGLISH-PERMUTATIONS-All Questions

From among the 36 teachers in a college, one principal, one vice-pr...
Text Solution
|
In how many ways can 6 persons stand in a queue?
Text Solution
|
There are five books on Mathematics and 6 books on Physics in a book ...
Text Solution
|
Seven athletes are participating in a race. In how many ways can the ...
Text Solution
|
If a group of n distinct objects, the number of arrangements of 4 obj...
Text Solution
|
If the letters of the word ‘MOTHER’ are written in all possible orders...
Text Solution
|
In a room there are 12 bulbs of the same wattage, each having separate...
Text Solution
|
How many different signals cab be given using any number of flags from...
Text Solution
|
It is required to seat 8 men and 4 women in a row so that the women ...
Text Solution
|
If P(n ,4)=20xxP(n ,2),find n.
Text Solution
|
If P(n ,4)=18xxP(n ,3), find n
Text Solution
|
If P(n ,4)=20xxP(n ,2), then find the value of n
Text Solution
|
If P(n ,4)=20 x P(n ,2),find n.
Text Solution
|
In how many ways can 6 persons stand in a queue?
Text Solution
|
Seven athletes are participating in a race. In how many ways can the ...
Text Solution
|
If 22P(r+1):^(20)P(r+2)=11 : 52 ,find r
Text Solution
|
If 2n+1P(n-1) : (2n-1)Pn =3:5,find n
Text Solution
|
Find the number of arrangements of the letters of the INDEPENDENCE. ...
Text Solution
|
In how many ways can the letters of the word PENCIL be arranged so tha...
Text Solution
|
How many 4-letter word, with or without meaning, can be formed out of ...
Text Solution
|