A student is told to work any 8 out of 10 questions on an exam. In how many different ways can he complete the exam

Mathematics

1 answer:

Korolek [52]3 years ago

7 0

Answer:

Step-by-step explanation:

Assuming the order in which he answers the questions matter the answer is the number of permutations of 8 in 10.

This is 10! / (10-8)!

= 1,814.400.

If the order does not matter then the answer is the number of combinations of 8 from 10:

This is 10!/8!*2!

= 45.

You might be interested in

A jar contains 100 coins. If it is very unlikely that you will randomly choose a quarter out of the jar, how many quarters could

lidiya [134]

Answer:

Step-by-step explanation:

5 0

3 years ago

Use the quadratic formula to solve x^2-2x+2=0

Helen [10]

The quadratic formula is...
$\frac{-b (+/-)\sqrt{b^2-4ac}}{2a}$
your a will be in front of your x^2, b in front of your x, and c will be the number without an x. Plug those into the equation and you'll get two answers. That will be it

3 0

3 years ago

What is the greatest common factor GCF of 10 and four

Pani-rosa [81]

Answer:

Take the numbers 50 and 30. Their greatest common factor is 10, since 10 is the greatest factor that both numbers have in common. To find the GCF of greater numbers, you can factor each number to find their prime factors, identify the prime factors they have in common, and then multiply those together.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Greatest common factor of 48,120

AlekseyPX

$Hello. 

Let's figure this out.

I'll list all the factors to help us answer your question. 

48: 1
2
3
4
6
8
12
16
24
48

120: 1
2
3
4
5
6
8
10
12
15
20
24
30
40
60
120 

We can see that the GREATEST common factor (GCF) between

49 and 120 is: 24

You're welcome.$

5 0

4 years ago

Read 2 more answers

What is the length of the diagonal?

Anon25 [30]

The answer is $16\sqrt{8}$ i hope this answer helps you!

4 0

4 years ago

Read 2 more answers