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Odd Number Form
publish date: 2026/05/23 05:02:18.230065 UTC
An odd number can be expressed in the form (1). If \( a \) is an even number, then \( (a + 1) \) is (2).
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odd
2n ± 1
Correct Answer
(1) 2n ± 1
(2) odd
Explanation
An odd number takes the form \(2n \pm 1\) where \(n\) is an integer. If \(a\) is even, then \(a \pm 1\) is odd, and vice versa.
Reference
Introduction to Differential Calculus (Systematic Studies with Engineering Applications for Beginners) - 2012