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1. If a is an even integer and b is an odd integer, which of the following expressions could be an even integer?
- A. 3a+3b
- B. 3a+3b
- C. 3a+3b
- D. 3a+3b
Answer: Option B
Explanation:
Only when and odd number is added with another odd number , or multiplied by an even number, the result is even.
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