Maths-
General
Easy
Question
Consider the circuit,
If the probability that each switch is closed is p, then find the probability of current flowing through AB
The correct answer is:
Current in the upper part will flow only if both the switches a and b are closed
Their probability = p.p. = 
Now current will flow in lower part of c, if c is closed, its probability is p. Thus current will flow from A to B if current flows either in upper part or flow in lower part.
\ Required probability =.
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