Q. In a Mathematics paper there are three sections containing 4, 5 and 6 questions respectively. From each section 3 questions are to be answered. In how many ways can be selection of questions be made?
A) 34
B) 800
C) 1600
D) 9600
Explanation
(b)
Total number of selections $= \ ^{4}C_{3} \times \ ^{5}C_{3} \times \ ^{6}C_{3}$
$= 4 \times 10 \times 20 = 800$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.