An orbiting satellite has two solar cells, which function independently of each other. During
a mission, each cell fails with a probability of 0.03. What is the probability that there will be
adequate power output for the mission if at least one of the two cells must be active?

Question

An orbiting satellite has two solar cells, which function independently of each other. During
a mission, each cell fails with a probability of 0.03. What is the probability that there will be
adequate power output for the mission if at least one of the two cells must be active?

anonymous · Answer

probablity that the power will be adequate = 1- both cells fails
1- 0.03*0.03

michele_laino · Answer

there are four possible cases, namely:
1) both cells are not active
2) both cells are active
3) the first cell is active and the second one is not active
4) the first cell is not active and the second one is active