Every one who passes the test will be awarded a degree. The probability that Tom passes the test is0.3, and the probability that John passes the test is 0.4. The two events are independent of each other.What is the probability that at least one of them gets the degree?

• Probability of Tomm passing=0.3,So Probability of Tom doesn't pass=0.7
  Probability of John passing=0.4,So Probability of John doesn't pass=0.6
  Probability that none of the two passes = 0.7*0.6= 0.42
  probability that at least one of two passes = 1-0.42= 0.58
• 11 years agoHelpfull: Yes(7) No(0)
• Ans=0.58
  Probability of Tomm passing=0.3,So Probability of Tom doesn't pass=0.7
  Probability of John passing=0.4,So Probability of John doesn't pass=0.6
  probability that at least one of them passes=(Tomm passes*John fails)+(Tomm fails*John Passes)+(Both of them passes)=0.3*0.6+.04*.07+0.3*0.4=0.58
  
• 11 years agoHelpfull: Yes(2) No(1)
• Probability that at least one of them gets the degree is:
  0.3*0.4=0.12
• 11 years agoHelpfull: Yes(0) No(1)
• pby that Tom passes = 0.3
  pby that Jack passes = 0.4
  pby that both Tom and Jack pass = 0.4*0.3 = 0.12
  now they are asking atleast one ... So it has to be min one of them need to pass and max both will pass.. So 0.3+0.4+0.12 = 0.82
• 11 years agoHelpfull: Yes(0) No(0)