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10 questions from this quiz
To test if statements are true or not
implies that
Because xxx could be ±3\pm 3±3
if and only if
2n2n2n
2n+12n+12n+1
Use same letter, e.g., n,n+1n, n+1n,n+1
Even
Odd
P⇐QP\Leftarrow QP⇐Q
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