MATH 120
Dr. Fenton
Test 1, Individual portion
Fall 2009
NAME
SHOW YOUR WORK! Credit is based on how you do the problem, not on the answer. You may use a
calculator if you wish. Please do not write your work on this page.
1. (15 pts.) Find gcd(150, 420) a
MATH 120
Dr. Fenton
Test 2
Fall 2009
NAME
SHOW YOUR WORK! Credit is based on how you do the problem, not on the answer. You may use a
calculator if you wish. Please do not write your work on this page. There are ten problems worth 10 points
apiece.
1. Let
MATH 120
Dr. Fenton
Test 1, Individual portion solutions
Fall 2012
1. (10 pts.) Here are some numbers. Put them in increasing order (smallest to largest). Show how you
do this.
99.4, 144.6eight , 401.3f ive , 1100010.1two
144.6eight = 1 82 + 4 81 + 4 80 +
MATH 120
Dr. Fenton
Final Exam
Fall 2009
NAME
SHOW YOUR WORK! Credit is based on how you do the problem, not on the answer. You may use a
calculator if you wish. Please do not write your work on this page. There are fteen problems.
1. (10 pts.) Suppose th
MATH 120 Dr. Fenton Fall 2009
Test 1, Group portion solutions
1. (10 pts.) Here is a recursive function.
1 if 7121
9(0) m{ gm 1) we {Mun- if n. >1
(a) Cleate this function in Mapie.
(b) Cleate a sequence showing at ieast the rst fifteen output value
MATH 120
Dr. Fenton
Test 2 Solutions
Fall 2012
Problems 1 - 10 were on both the individual portion and the group portion. Problems 11 and 12 were
on only the group portion.
1. Suppose that T is a subset of the natural numbers. Are the following sentences
MATH 120 Test 2 Solutions
DI. Fenton Fail 2009
1. Let A and B be two sets. Does (A D BC)c equal (.A UB)? Draw Venn diagrams to prove your answer.
Yes, (A H Bc): = {Ac U B). This relies on one of DeMorgan's Laws.
Figure 3: A013 {A HBCY ACUB
2. Are th