R=input ('enter my roll no:');
T=570-R;
P=9215-2*R;
C=470-R;
Lambda_T=input ('failure rate of transistor:');
Lambda_P=input ('failure rate of registors:');
Lambda_C=input ('failure rate of capacitor s:');
Lamda_S=(T*Lambda_T)+(P*Lambda_P)+(C*Lambda_C);
Reliability_system=exp(-Lamda_S *90);
disp('failure rate of the system:');
disp(Lamda_S);
disp('reliability of the system:');
disp(Reliability_system);