Posts published by “Miranda Menestrina”

Math What is the last digit of ? A. 1 B. 3 C. 6 D. 7 E. 9 (click and drag your mouse to see the answer) Question Discussion &…

Math Some part of a 50% solution of acid was replaced with an equal amount of 30% solution of acid. If, as a result, 40% solution of acid was obtained,…

Math If and are prime numbers, what is the value of ? (1) is a prime integer. (2) Question Discussion & Explanation Correct Answer - E - (click and drag…

Math The functions and are defined for all the positive integers by the following rule: is the number of positive perfect squares less than and is the number of primes…

Math A bowl contains red and green chips and no chips of any other color. If two chips are drawn from the basket at random without replacement, what is the…

Math If does not equal to zero, and , then could be: I. II. III. A. only B. only C. only D. and only E. and only Question Discussion &…

Math At the end of the term, a group of three students has to take three tests. The maximum score on each test is 200. The table below shows the…

Math What is the product of a certain pair of consecutive odd integers? (1) Exactly one of the integers is negative. (2) At least one of the integers is positive.…

Math The diagram above shows a circle inscribed in a square. The area of the shaded region is approximately what percent of the area of the square? A. 14% B.…

Math If function f(x) satisfies f(x) = f(x^2) for all x, which of the following must be true? A. f(4) = f(2)f(2) B. f(16) - f(-2) = 0 C. f(-2)…