21. There are 18 students involved in the class production of Arsenic and Old Lace. a) In how many ways can the teacher cast the play if there are five male roles and seven female roles and the class has nine male and nine female students? b) In how many ways can the teacher cast the play if Jean will play the young female part only if Jovane plays the male lead? c) In how many ways can the teacher cast the play if all the roles could be played by either a male or a female student?

$1010 is how many times as much money as $106? Why? Group of answer choices A) Ten​ thousand, because 1010 is 105​, or​ 10,000, times as large as 106. B) Ten​ thousand, because 1010 is 104​, or​ 10,000, times as large as 106. C) Four​, because 10 is four more than 6. D) Four​, because 104 is 4 times as large as 106. E) One​ thousand, because 1010 is 104​, or​ 1000, times as large as 106. F) One​ thousand, because 1010 is 103​, or​ 1000, times as large as 106.

25) 42> 16 668 672 674