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A building has two lifts. L(1) and L(2) ...

A building has two lifts. `L_(1)` and `L_(2)` are events when lifts are working. Probability `P(L_(1) ) = 0.01 = P(L_(2))* L_(1)` and `L_(2)` are independent events. What is the probability of atleast one lift is not working ?

A

0.9999

B

0.09

C

0.0009

D

0.9989

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A
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