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1. If x is an odd integer, which of the following must be an even integer?

  • A. 2x-1
  • B. 2x-1
  • C. 2x-1
  • D. 2x-1

Answer: Option C

Explanation:

let, x is an odd integer i.e. x=1,3,5,…

now if x=1, 5x+1=5*+1=6 is an even integer


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