Q5The sides of a square region, measured to the nearest centimeters, are 6 centimeters long.The least possible value of the actual area of the square region is 请问这个least是表示不可能还是最小的?歧义啊
A.36.00 sq cm B.35.00 sq cm C.33.75 sq cm D.30.25 sq cm E.25.00 sq cm Answer: e/D
Q8: When positive integer x is divided by 5, the remainder is 3; and when x is divided by 7, the remainder is 4.When positive integer y is divided by 5, the remainder is 3; and when y is divided by 7, the remainder is 4.If x > y, which of the following must be a factor of x - y?
A.12 B.15 C.20 D.28 E.35 Answer: e?
选对了但是解释不出来。余数问题还是一大障碍啊!望指教我这里就是直接5×7了
还是余数题:If n is a positive integer, what is the remainder when 38n+3 + 2 is divided by 5?
A.0 B.1 C.2 D.3 E.4 Answer: a?0 1 3E
我基本上都错在余数问题上了。。。Q29:
What is the remainder when the positive integer n is divided by the positive integer k, where k > 1? (1)n = (k+1)3 (2)k = 5
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient. Answer: c/A
错选C了
If k is an integer and (0.0025)(0.025)(0.00025)×10k is an integer, what is the least possible value of k?