1800-150-456-789
FlagBACK
Flag Algebra> permutation and combination...
question mark

dear sir/madam, i am having doubt in the following question for sometime now and iit is on 11th ,so please help...!\"In how many ways 10 speakers can speak at a function such that A speaks before B and B speaks before C.\"the answer is 10!/3!i cannot understand how.Please help.

h v , 14 Years ago
Grade 12
anser 2 Answers
Priyansh Goel

Last Activity: 14 Years ago

Follow these steps:

1.  Select A,B,C from 10 people in 10C3 ways.

2.   Arrange A,B,C in only 1 way. AS Ais before B and Bis before C.

3.   All others remaining can be permuted in 7! ways.

 

So, total : 10C3 *1*7!.

Solve this to get ur answer.

 

h v

Last Activity: 13 Years ago

thanks for the answer

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...

Other Related Questions on Algebra

question mark
What is a binomial expression?
Algebra
1 Answer Available

Last Activity: 10 Month ago(s)

question mark
Can we divide two vectors? If this is possible then how?
Algebra
1 Answer Available

Last Activity: 10 Month ago(s)

question mark
How do you write “the product of 18 and q” as an algebraic expression?
Algebra
1 Answer Available

Last Activity: 10 Month ago(s)

question mark
दहावीच्या आय सी एस इ विद्यार्थ्यांनी पुढे काय करायला पाहिजे
Algebra
0 Answer Available

Last Activity: 1 Year ago(s)

question mark
Find the least number of square tiles by which the floor of a room of dimensions 16.58 m and 8.32 m can be covered completely. why HCF and not LCM as “least” keywor dis given?
Algebra
1 Answer Available

Last Activity: 2 Year ago(s)