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1. If n is an even integer which of the following must be an odd integer?
- A. 7n - 2
- B. 7n - 2
- C. 7n - 2
- D. 7n - 2
Answer: Option C
Explanation:
Consider even integer= 2
Option A= (3×2−2)=4 = Even integer.
Option B= 2−2=0 =Even integer.
Option C= 3(2+1)=9 = Odd integer
Option D= 2×2=4 = Even integer.
∴ Correct answer is option C.
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