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Difficult math queestion? Probabilities question: If an event has a 1 in 32 chance of occurring, what is the chance that it will occur twice in 6 tries? May i please have help with finding area of jose's yard? Simplify (1+tan^2x)(1+cos2x)? 1.4 eV electron has a 10-4 probability of tunneling through a 2.5 eV barrier.What is the prob a 1.4 eV proton going through the same barrier?