Richard has been given a 12 question quiz in his history class each question has 4 answers of only one is correct. Since Richard has not attended the class lately he doesn’t know the answers. Assuming that Richard guesses on all 12 question find the probability that he will answer NO MORE than 3 questions correctly

"Get 15% discount on your first 3 orders with us"
Use the following coupon
FIRST15

Order Now