Elitmus
Exam
Numerical Ability
Probability
Person A And Person B Tosses Two Times a single Coins Each Find out What is the Probability That Both get Equal times Heads
1)5/16
2)1/4
3)3/8
4)1/2
Read Solution (Total 12)
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- possible outcomes -->
(HH HH),(HH,HT),(HH TH),(HH TT),(HT HH),(HT HT),(HT TH),(HT TT),(TH HH),(TH HT),(TH TH),(TH TT),(TT HH),(TT HT),(TT TH),(TT TT)
event:Both get equal times heads
(HH HH),(HT HT),(HT TH),(TH HT),(TH TH),(TT TT)
Probability = 6/16 = 3/8
- 10 years agoHelpfull: Yes(39) No(20)
- @ ANN THERESSA
There Are only 5 Cases where they got Heads Equal Times
5/16 is the answer - 10 years agoHelpfull: Yes(39) No(4)
- (HH,HH),(HT,HT),(TH,TH),(TH,HT),(HT,TH)
SO TOTAL PROBABILIY IS : 5/16 - 10 years agoHelpfull: Yes(8) No(4)
- @Tausif
I thought we should consider (TT TT) as required outcome since we cannot put it on the column for not getting equal number of heads. - 10 years agoHelpfull: Yes(6) No(4)
- HH HH
HT HT
TH TH
TT TT
sample space= 4*4 =16
fav outcomes = (HH,HH),(HT,HT),(HT,TH),(TH,HT),(TH,TH),(TT,TT)=6
prob= 6/16 = 3/8 - 10 years agoHelpfull: Yes(4) No(7)
- The answer is 1. 5/16..
- 10 years agoHelpfull: Yes(2) No(2)
- (hh hh),(hh ht),(hh tt),(hh th),(tt hh),(tt ht),(tt th),(tt tt),(ht hh),(ht ht),
(ht th),(ht tt),(th hh),(th ht),(th th),(th tt).
possibility of getting equal times heads= 6
total cases=16
probability=6/16=3/8 - 10 years agoHelpfull: Yes(1) No(3)
- (HH HH),(HH,HT),(HH TH),(HH TT),(HT HH),(HT HT),(HT TH),(HT TT),(TH HH),(TH HT),(TH TH),(TH TT),(TT HH),(TT HT),(TT TH),(TT TT)
event:Both get equal times heads
(HH HH),(HT HT),(HT TH),(TH HT),(TH TH),(TT TT)
Probability = 6/16 = 3/8 - 10 years agoHelpfull: Yes(1) No(3)
- 1/2
1st time A and B get Head 1/4
2nd Time Again A and B ...1/4
1/4+1/4=1/2 - 10 years agoHelpfull: Yes(0) No(3)
- probability getting heads on 1st time is (HH,HT,TH,TT)=1/4
probability getting heads on 2nd time is (HH,HT,TH,TT)=1/4
total number of chances is 2/8 =14
- 10 years agoHelpfull: Yes(0) No(2)
- For A & B: n(s)={H,T} n{E}={H} P(E)=n(E)/n(s)=1/2...ans
- 9 years agoHelpfull: Yes(0) No(0)
- Ann Theressa why we are taking this (TT TT) combination
- 9 years agoHelpfull: Yes(0) No(0)
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