Answer:
0.0111% probability that he answers at least 10 questions correctly
Step-by-step explanation:
For each question, there are only two outcomes. Either it is answered correctly, or it is not. The probability of a question being answered correctly is independent from other questions. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
A multiple-choice examination has 15 questions, each with five answers, only one of which is correct.
This means that 
What is the probability that he answers at least 10 questions correctly?









0.0111% probability that he answers at least 10 questions correctly
56% chance it won’t be a dime
Answer:
The first 3 terms in the expansion of
, in ascending power of x are,

coefficient of
in the expansion of
= (240 - 192) = 48
Step-by-step explanation:

= 
=
+ terms involving higher powers of x
=
+ terms involving higher powers of x
so, the first 3 terms in the expansion of
, in ascending power of x are,

Again,

= 
Now, by inspection,
the term
comes from k =5 and k = 6
for k = 5, the coefficient of
is ,
= -192
for k = 6 , the coefficient of
is,
= 240
so, coefficient of
in the final expression = (240 - 192) = 48
Answer:
He can apply for 4 different majors at each college giving
5 * 4 = 20 (if the college permits more than 1 application for a major)
Answer:
it would have to be a or b i think
Step-by-step explanation: