probab of upper part to work 1/2
probab of lower part to work 1/2*1/2=1/4
probab that none of them work is 1/2*3/4=3/8
probab that atleast one of them work 1-3/8=5/8
Q) An Electrical System has open-closed switches S1,S2,S3 as Shown Below:
The Switches operate independently of one another and the current will flow from A to B either.If P(S1)=P(S2)=P(S3)=0.5 .Find that the circuit will work.???
GUYZ PLZ GIVE IT A TRY!!!!!!!
probab of upper part to work 1/2
probab of lower part to work 1/2*1/2=1/4
probab that none of them work is 1/2*3/4=3/8
probab that atleast one of them work 1-3/8=5/8