2 years ago

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]2 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.

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