the second statement says that k/7 is not an odd integer ,which means it can have values such as 2/7 or 1/7 or 3/7 or 4/7 .....etc .these values are definately not an odd integer .they are some fractions .depending on various values we get various values of "k" such as 2 or 1 or 3 or 4 etc .so we cant really conclude whether "k" is odd or even int .