What is the counterexample for "If two numbers are odd, then theri sum is odd"

Which of these sequences is a geometric sequence a 1,2,4, 7, 11, 16, 22. b. 2.4.8.14.22.38 c.3.6.9. 15.18,21 d. 3,9,27,81,243,729,

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12