SOLUTION: Find n(A) for the set. A={1/2,1/3,1/4,1/5,...,1/29,1/30}

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Question 276775: Find n(A) for the set.
A={1/2,1/3,1/4,1/5,...,1/29,1/30}
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Notice how there are 30 elements in the set {1, 2, 3, 4, 5,...,29, 30} by simply noting that 30-1+1=30 or that the elements are integers, start at 1 and end at 30.

Simply invert each element to get {1/1, 1/2, 1/3, 1/4, 1/5, ..., 1/29, 1/30} which is close to what we want, but we have to remove the element 1/1 to get {1/2, 1/3, 1/4, 1/5, ..., 1/29, 1/30}. Since we removed one element, we now have 29 elements in this set.

So n(A) = # of elements in set A = 29