Question

A student has to answer 10 questions, choosing atleast 4 from each of Parts A and B.

Answer 1

Step-by-step explanation:

the question makes 3 cases...1) When 4 questions are chosen from A and rest 6 from B2) When 5 questions are chosen from A and rest 5 from B3) When 6 questions are chosen from A and rest 4 from BThis makes the answer...(6C4×7C6) + (6C5×7C5) + ( 6C4× 7C6)This makes the answer...105+126+35= 266 ways