Solve the following reliability problems a) A given component has an MTBF of 105hr, what is the reliability for an operating period of 10hr for 6 such components in series? b) Four capacitances of 25F each are connected in parallel to act as a single capacitance of 100F required for the successful operation of a unit. If the reliabilities of these capacitors are 0.6,0.7,0.8, and 0.9 respectively, find the reliability of the unit [10]