Please show work as we need to understand how to calculate the following 4 questions:

1.  You play a card game where 2s are considered wild.  You are dealt 7 cards - what is the probability that you did not get dealt a 2.

2.  You have a bag with 5 black marbles, 5 red marbles and 5 white marbles.  If you make your selections without replacement what is the probability that you would select a black marble, a red marble and a white marble from the bag in that order?

3.  You have a jar of coins in your kitchen that contains 50 pennies, 40 nickels, 30 dimes and 20 quarters.  You reach in and take out three coins - what are the odds that they are all dimes?

4.  How many 5 digit numbers can you make using only odd digits and not repeating any of the numbers?