Falling Behind in Studies? Join Our Performance Improvement Batch. Enroll For Free
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
1. At a certain conference of 100 people,there are 29 Indians women and 23 Indian men. Of these Indian people 4 are doctors and 24 are either men or doctors. There are no foreign doctors. If 8A foreigners and B women doctors are attending the conference, then find the value of A-B.
Number of indians= indian men+indian women= 29+23=52Number of foreigners=100-52=48Given, number of foreigners=8ASo, A=6And of the 24 people whose information is given as:‘Of these Indian people 4 are doctors and 24 are either men or doctors.’As we have 23 indian men, there are 3 who are men and doctors as:The following eqn is just written considering only the Indian doctors and men specifically as information given in the questionn(M+D)= n(M)+n(D)-n(M.D)24= 23+4-n(M.D)n(M.D)=3this means that 3 indian men who are doctors.As 4 indians are doctors, so only 1 indian woman is a doctorAnd , there is no foreign doctor, soNumber of women doctors at the conference=1 =BB=1So, A-B=6-1=5
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -