Elitmus
Exam
Category
Two friends have decided to meet between 3 and 4 o clock and they have decided to wait for 15 mins to meet (for eg A have reached by 3 he will wait for 15 mins for B similarly B also ) then what is the probability of both are meeting?
A.
5/16
B.
7/16
C.
9/16
D.
3/16
Read Solution (Total 4)
-
- b/w 3 to 4 is 60 minutes if A is came wait 15 minutes then return or b is came then return so they don't meet in 45 minutes so .. 45*45 is event for nt meeting 60*60 is sample space for meet they any time then probability for meeting is.
1-45*45/60*60= 1-9/16= 7/16. - 10 years agoHelpfull: Yes(17) No(0)
- B. 7/16
1-((45*45)/(60*60))
45/60 IS THE PROB THAT A NEVER MEETS BE AND SAME FOR B - 10 years agoHelpfull: Yes(12) No(2)
- yes answer will be 7/16 i have done silly mistake i have taken the probability as 1-1/4*1/4=9/16
- 10 years agoHelpfull: Yes(2) No(1)
- can anyone plz explain how to solve this question for 3 or more persons?
- 10 years agoHelpfull: Yes(1) No(2)
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