Question

two friends charlie and gloria plans to visit a dentist for a regular check up in the same week from monday to friday . their chances of visiting the dentist on any one day of the week are equally likely. what is the probability of visiting the dentist (i) on the same day? (ii) on two consecutive days? (iii) on two different days?

Answer 1

same day is the answer

Answer 2

Answer :   Sample space

(M,M); (T,M); (W,M); (Th,M); (F,M)

(M,T); (T,T); (W,T); (Th,T); (F,T)

(M,W); (T,W); (W,W); (Th,W); (F,W)

(M,Th); (T,Th); (W,Th); (Th,Th); (F,Th)

(M,F); (T,F); (W,F); (TH,F); (F,F)

So, according to the above sample space

A) P(on the same day)== 5/25=1/5

B) P(on two consecutive days)== 8/25

C) P( o two different days)==20/25=4/5