Determine whether the conclusion is valid. If not, identify the additional information needed to make it valid.
2 answers:
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1a. n ≤ 21
1b. n ≥ 5
1c. n > 3/5
2d. n < 14
2e. n ≥ 14
1b. n ≥ 5
1c. n > 3/5
2d. n < 14
2e. n ≥ 14