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If n is a positive integer, is (1/10)n < 0.01?
(ii) (1/10)n – 1 < 0.1CorrectIncorrect/Not answered
If x, y, and z are positive integers, is x – y odd?
(i) x = z2
(ii) y = (z – 1)2CorrectIncorrect/Not answered
What is the circumference of the circle above with center O ?
(i) The perimeter of triangle OXZ is 20 + 10√2.
(ii) The length of arc XYZ is 5π.CorrectIncorrect/Not answered
Is n an integer?
(i) n2 is an integer.
(ii) √n is an integer.CorrectIncorrect/Not answered
If n and k are positive integers, is √(n + k) > 2√n?
(i) k > 3n
(ii) n + k > 3nCorrectIncorrect/Not answered
In a certain business, production index p is directly proportional to efficiency index e, which is in turn directly proportional to investment index i. What is p if i = 70?
(i) e = 0.5 whenever i = 60.
(ii) p = 2.0 whenever i = 50.CorrectIncorrect/Not answered
If n is a positive integer, what is the tens digit of n ?
(i) The hundreds digit of 10n is 6.
(ii) The tens digit of n + 1 is 7.CorrectIncorrect/Not answered
What is the value of (2t+t-x)/(t-x )?
(i) 2t/(t-x )=3
(ii) t – x = 5CorrectIncorrect/Not answered
Marcia’s bucket can hold a maximum of how many liters of water?
(i) The bucket currently contains 9 liters of water.
(ii) If 3 liters of water are added to the bucket when it is half full of water, the amount of water in the bucket will increase by 1/3.CorrectIncorrect/Not answered