Question

A question paper has two parts, part A and part B, each containing 10 questions. If the student has to choose 8 from part A and 5 from part B, in how many ways can he choose the question?

Answer 1

he should choose the easy question for part A and part B

Answer 2

Answer: 11340

Step-by-step explanation:

For part A he can choose any 8 out of 10

i.e. 10C8 .

For part B he can choose any 5 out of 10

i.e. 10C5

10!/(8!×2!) × 10!/(5!×5!)

=11340