53,130 ways.
There are 230300 ways.
435 ways.
The number of ways is 18C5 = 18!/(5!*13!) = 8,568 ways.
There are many different selections that could be made. You can figure it out by starting with 50 and then multiplying by each number lower to get all of the possibilities.
In how many ways can fourfour women be selected from the eighteight ​women
They can be selected in 756 ways.
If there are 58 defective circuit boards, two can be selected in 58*57/2 = 1653 ways.
Since each ticket wins, the question is equivalent to the number of ways of selecting 4 tickets out of 20. This is 4845.
18x17= 306 ways
35
30240