S is a set containing 9 different numbers. T is a set containing 8 different numbers, all of which are members of S. Which of the following statements cannot be true/ (A) The mean of S is equal to the mean of T. (B) The median of S is equal to the median of T. (C) The range of S is...
for calculating the max. no.of triangles that can be drawn in a polygon ? Somewhere in this forum i remember reading a hexagon can contain a max. of 6 triangles.
If x is a positive integer, what is the remainder when 712x+3 + 3 is divided by 5? 0 1 2 3 4
There are 500 workers in a company.Out of the 500 workers 15 % are women.The company is planning to hire another 50 workers without removing any of the existing workers. Out of the 50 new hires how many women should be hired to increase the percentage of women workers to 20%. The answer to...
Josha and jose work at an autoo repair center with their 4 other worker. For survey on health care, 2 of the 6 wil be randomly chosen to be interviewed. What is the probability that Josha and jose will both be chosen ? A) 1/15 B) 1/12 c) 1/9 D) 1/6 E) 1/3 A
Foodmart customers regularly buy at least one of the following products: milk, chicken, or apples. 60% of shoppers buy milk, 50% buy chicken, and 35% buy apples. If 10% of the customers buy all 3 products, what percentage of Foodmart customers purchase exactly 2 of the products listed above?. ...
What is the probability of getting an isosceles triangle by joining 3 vertices of a regular hexagon? A) 3/10 B) 3/5 C) 1/2 D) 2/5 E) None of the above
Each of 10 machines works at the same constant rate doing a certain job. The amount of time needed by the 10 machines, working together, to complete the job is 16 hours. How many hours would be needed if only 8 of the machines, working together, were used to complete the job? 18 20 22 24...
If 5^21 * 4^11 = 2 * 10^n, what is the value of n? a 11 b 21 c 22 d 23 e 32 Please explain
For a finite sequence of nonzero numbers, the number of variations in sign is defined as the number of pairs of consecutive terms of the sequence for which the product of the two consecutive terms is negative. What is the number of variations in sign for the sequence 1, -3, 2, 5,-4,-6? I solved...
If dice are thrown n times, find the probability of obtaining (a) no double "4" (b) at least one double "4" in the n throws.
If -2 =< x =< 2 and 3 =< y =< 8, which of the following represents the range of all possible values of y-x? A) 5 =< y-x =< 6 B) 1 =< y-x =< 5 C) 1 =< y-x =< 6 D) 5 =< y-x =< 10 E) 1 =< y-x =< 10
If y ≠ 3 and 3x/y is a prime integer greater than 2, which of the following must be true? Ⅰ. x = y Ⅱ. y = 1 Ⅲ. x and y are prime integers. (A) None (B) Ⅰ only (C) Ⅱonly (D) Ⅲonly (E) Ⅰand Ⅲ
Q. if two cards are drwan at random, what is the probability that either of them is 7 or 9 ? A) 190/663 B) 4/663 C) 2/13 D) 4/15 E) None of these A mine aaproach was :
Q. working alone at its own constant rate, a machine seals k cartoon in 8 hr, and working alone at its own constant rate a second machine seals k cartoon in 4 hr. iF the two machine working at their own constat rate and for the same period of time, together sealed a certain number of cartons, what...
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1. If x < 0, then √(-x│x│) is A. -x B. -1 C. 1 D. x E. √x 2. For a nonnegative integer n, if the remainder is 1 when 2n is divided by 3, then which of the following must be true? I. n is greater than zero.
I was doing the IMS GMAT guide for Perm & Comb and came across a couple of confusing ones. someone plz shed some light Problem Solving 1. There are 4 copies of 5 different books. In how many ways can they be arranged on a shelf? (a) 20!/4! (b) 20!/5(4!) (c) 20!/(4!)5 (d) 20! (e) 5! :hmm:
If a portion of a half water/half alcohol mix is replaced with 25% alcohol solution, resulting in a 30% alcohol solution, what percentage of the original alcohol was replaced? 1. 3% 2. 20% 3. 66% 4. 75%
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