Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
dear sir/madam, i am having doubt in the following question for some time 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.
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.
thanks for the answer
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !