If k is a positive integer, what is the remainder when (k + 2)(k^3 – k) is divided by 6? A. 0 B. 1 C. 2 D. 3 E. 4 Correct Answer: A Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice […]
If x^2 − 2 < 0, which of the following specifies all the possible values of x? (A) 0 < x < 2 (B) 0 < x < √2 (C) −√2 < x < √2 (D) −2 < x < 0 (E) −2 < x < 2 Correct Answer: C Full explanation coming soon. Send
M and N are integers such that 6<M<N.What is the value of N? (1) The greatest common divisor of M and N is 6 (2) The least common multiple of M and N is 36 A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but
M and N are integers such that 6<M<N.What is the value of N? Read the Full Article »
According to a certain estimate, the depth N(t), in centimeters, of the water in a certain tank at t hours past 2:00 in the morning is given by N(t)= -20(t – 5)^2 + 500 for 0 ≤ t ≤ 10. According to this estimate, at what time in the morning does the depth of the
The figure shown above consists of a shaded 9-sided polygon and 9 unshaded isosceles triangles. For each isosceles triangle, the longest side is a side of the shaded polygon and the two sides of equal length are extensions of the two adjacent sides of the shaded polygon. What is the value of a? A. 100
