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
In how many ways 7 persons can be selected from 5 indian, 4 british and 2 chinise, if atleast 2 are to be selected from each country.
Hi Rajat,
The answer is :
At least 2 persons have to be slected form each country so :
ways of selecting 2 persons from 5 indians is 5C2
ways of selecting 2 persons from 4 british is 4C2
ways of selecting 2 persons from 2 chinese is 2C2
Thus ways of slecting 6 persons form entire group is 5C2 * 4C2 * 2C2
Now 1 person has to be selected from remaing 3 Indians and 2 british and 0 chinese
possible way of selceting 1 person is 5C1
Thus final answer to select 7 persons is 5C2 * 4C2 * 2C2 * 5C1
Please feel free to ask as many questions you have.
Puneet
hey I have answer booklet (not solution). And in it answer given is "100".
My one frnd has suggested me the solution as:
you have to choose two chinese forced, at least two british and two indians, and one between british or indian. so you have
1*4C2*4C2*(3+2)=180 the last term: 3 indians+2 british....
But its also wrong
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 !