Shamil is taking an exam which has 3 sections,DI,VA and QA.He identifies that his probabilities of clearing cut offs in these sections are 0.2, 0.3, and 0.9 respectively. If these cut offs are independent of each other , find the probability that Shamil clears at least two cut offs.
1) 0.622
2) 0.484
3) 0.042
4) 0.402

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so he clears 2 exams or all 3
in 2 exam's case, there are 3 possibilities
DI, VA
VA,QA
DI,QA

Yes. But if when I add, the answer comes out to be 0.564

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