#### Answer

If integer is even then its equals to twice some integer and if integer equals to twice some integer then it is even

#### Work Step by Step

p ↔ q ≡ ( p → q) ∧ (q → p)

Published by
Cengage Learning

ISBN 10:
0-49539-132-8

ISBN 13:
978-0-49539-132-6

p ↔ q ≡ ( p → q) ∧ (q → p)

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