An exam has 25 multiple choice questions, 12 short answer questions, and 8 extended response questions. Each candidate must answer 20 multiple choice questions, 9 short answer questions, and 3 extended response questions. How many different choices of questions are possible on this exam?

Question

anonymous · Answer

a. 654 561 600  	
	 b. 	
	 c. 2400	
	 d.

anonymous · Answer

b.5.655X10^13

d. 3.467X10^33

anonymous · Answer

$\huge ^{25}C_{20}\quad^{12}C_{9}\quad^{8}C_{3}=654561600$

anonymous · Answer

but i m not sure.

anonymous · Answer

That is the right answer.

anonymous · Answer

thank you :)