One restaurant provides two meal combos: rice combo (R) with price of $20, and noodle combo(N) with price of $22. It is known that 60% of customers order rice combo, and 40% of customers order noodle combo. Randomly select three customers, assume each customer orders one combo. Define random variable X: the total payment of three customers. For example, if all three customers order rice combo, the total payment is $60. 1(10). Find the probability distribution (pmf) of X. 2(2). Find the probability that the total payment is more than $65