Answer:
Step-by-step explanation:
given that on a six-question multiple-choice test there are five possible answers for each question, of which one is correct and four are incorrect
By mere guessing probability for choosing correct answer = p = 0.2
also each question is independent of the other
Hence if X is the number of correct questions then
X is binomial with p = 0.2 and n = 6
a) being correct on three questions,
=
(b) being correct on four questions,
= 
(c) being correct on all six questions
=
V=BH/3
V=(4)(6)/3
V=(24)/3
V=8
6 boys, ratio is boy:girl 2:3
Answer:
Whats the question?
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
because 25 times 2 is 50 and 25 times 3 is 75
hope I helped!!! ;)