[5 points] Design a combinational circuit whose input is a 5-bit number and whose output is the number of ones in the input. For example, the 5 -bit number 10010 base-2 has two ones. Maximum number of ones in the input is five and minimum is zero. Complete tasks P,Q, and R (see below) for this exercise. [5 points] Suppose that a combinational circuit is to be designed to control the Low-Fuel Indicator (LFI) light of a car. If the car's fuel levels are too low the LFI turns on, otherwise the LFI stays off. The car's fuel tank has a sensor attached to it that outputs the amount of fuel in the tank as a 4bit number. So if the sensor's output is 0000 base-2 it means there are 0 base- 10 liters of fuel in the tank, if the sensor's output is 1100 base-2 then it means there are 12 base-10 liters of fuel in the tank. The amount of fuel in the tank is always measured in liters and always an integer number i.e. minimum amount of fuel in the tank would be 0 base-10 liters and maximum amount of fuel in the tank would be 15 base-10 liters and all integers in between 0 and 15 could be the amount of fuel left in the tank. LFI turns on if fuel level in the tank of the car is below 5 base-10 liters, otherwise the LFI stays off. Complete tasks P,Q, and R (see below) for this exercise