Math 10.50-003: Quiz 2
January
28, 2016
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Name:
final
1. (4 point)
T ALL WOB1 and circle or box your
the qestioin te space provided. SI-TOW
notes. text book. and homework, but the use of any
elect ionic device is not permit I ccl.
aHswer. You may use your
Find
(a) Z2
the suni. Express
your answer
as an integer:
Z222*Z =
(b)Z21
2. (4 points) \Vhat is the sum of all of the terms of (lie sequenc’e 3.
=
..3
i
.-
-c
oc
—‘
—
1,
.
—,
(j
h,...?
z
Simplify completely.
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3. (4 points) A student may answer any six of ten questions on an examination. In how many ways
six questions be selected? Simplify your answer so that your answer does not include ay iactoIJjs.
can
/10
-
e cer*
4. (4 points) Ten horses are entered in a race. In how many w’ays can the first—, second—, and third—place
winners be determined, assuming ties are not allowed? Express your answer as a product of integers.
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