.........a) If w is odd -> the unit digit is 4b) if w is even -> The unit digit is 6.Now lets jump into the statements given :(1) W is a even integers We cannot be very sure because w can also be 0 or negative numbers.INSUFFICIENT(2) w>0 This alone again will not help us to determine anything about the unit is digit.INSUFFICIENT(1) + (2) Combining both the statementsWe come to know W cann