ASAP PLEASE HELP IM TIMED WILL MARK BRAINLIEST Sally concludes that, for positive integers a and b, if a > b then a?>b? She uses mathematical induction to support
her claim. Is there a counterexample to disprove her conclusion, or is Sally correct?
A)Sally is correct
B)Sally is incorrect. A counterexample is a = 1 and b = 2.
C)Sally is incorrect. A counterexample is a = -1 and b =-2.
D)Sally is incorrect. A counterexample is a = 0.4 and b = 0.3.

Step-by-step explanation:

Case 2 (n is odd): In this case n = 2k+1 for some integer k, and so, by substitution as above, n2 -

n + 3 = ... = 2(2k2 +2k + 1) + 1. Let t = 2k2 + 2k + 1. Then t is an integer because products and sums of

integers are integers. Hence, n2 - n + 3 = 2t + 1 where t is an integer, and so, by definition of odd, n2 -

n + 3 is odd.

in that case in both cases n2 - n + 3 is odd. yw

hope this help

cse.wustl.edu

C 10% Condition.

Step-by-step explanation:

Let's Look at them one by one.

A: Large Enough sample condition.

this is met because 600 students is a good number to carry out a surwey.

B: Randomization,  600 incoming freshman are definitely random.

C: we are left with C so the answer is C.