IBPS
Government Jobs Exams
Numerical Ability
Probability
If the chances that Sonu, Monu, Mahesh can solve a problem are what is the probability that given problem can be solved if they all try?
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probability of problem solving by sonu,monu and mahesh each are 1/3
probability of problem not being solved by sonu,monu and mahesh each are 2/3
the problem is solved if
1. one of three solves the problem
so, probability in this case= 3*(1/3)(2/3)(2/3)
2. two of them solve the problem
so, probability in this case= 3*(1/3)(1/3)(2/3)
3. all three solve the problem
so, probability in this case= (1/3)(1/3)(1/3)
so,the required probability= (4/9)+(2/9)+(1/27)= 19/27.- 11 years agoHelpfull: Yes(0) No(0)
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