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a. 1/n + 1/m : m and n are both in N

b. x in irrational #s : x ≤ root 2 ∪ N

c. the straight line L through 2points a and b in R^n.

for part c. i got: intA= empty ; bdA=clA=accA=L Is this correct? how about part a and part b....i am so confused...

b. x in irrational #s : x ≤ root 2 ∪ N

c. the straight line L through 2points a and b in R^n.

for part c. i got: intA= empty ; bdA=clA=accA=L Is this correct? how about part a and part b....i am so confused...

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