Preparation MBA

19 DT: If k is an integer and 2 < k < 7, for how many different values of k is there a triangle with sides of lenghts 2, 7, k?

1 DT: Last month, a certain music club offered a discount to preferred customers. After the first compact disc purchased, prefered customers paid $3.99 for each additional CD. If a preferred customer purchased a total of 6 CDs and paid $15.95 for the first CD, then the dollar amount of that the customer paid for the 6 CDs is equivalent of to which of the following?

15 DT: The product of all the prime numbers less than 20 is closest to which of the following powers of 10?

25 DT: If the untis digit of integer n is greater than 2, what is the units digit of n?

1 The units digit of n is the same as the units digit of n^2

2 The units digit of n is the same as the units digit of n^3

What is defined as the MEDIAN?

9 DT:  A researcher computed the mean, the median and the standard deviation for a set of performance scores. If 5 were to be added to each score, which of these three statistics would change?

6 DT:  A marketing firm determined that, of 200 households surveyed, 80 used neither Brand A nor Brand B soap, 60 used only Brand A sopa and for every household that used broth brands of soap, 3 used only Brand B soap. How many of the 200 households surveyed used both brands of soap?

4 DT: Among a group of 2,500 people, 35% invest in municipial bonds, 18% invest in oil stocks and 7% invest in both. If 1 person is to be randomly selected from the 2,500 people, what is the propability that the person selected will be one who investes in municipial bonds but NOT in oil stocks?

20 DT: A right circular cone is inscribed in a hemisphere so that the base of the cone coincides with the base of the hemisphere. What is the ratio of the height of the cone to the radius of the hemisphere?

8 DT: If a certain toy store's revenue in November was 2/5 of its revenue in December and its revenue in January was 1/4 of its revenue in November, then the store's revenue in December was how many times the average (arithmetic mean) of its revenues in November and January?

3 DT: The sequence a1, a2, a3, a4,...,a_n is such that a_n=(a_n-1+a_n-2)/2   for all n>=3 if a₃=4 and a₅=20, what is the value of a₆?

5 DT: A closed cylindrical tank contains 36pi cubic feet of water and is filled to half of its capacity. When the tank is placed upright on its circular base on level ground, the height of the water in the tank is 4 feet. When the tank is placed on the side on level ground, what is the height, in feet, of the surface of the water above the ground?

What is meant by arithmetic mean?

Was entspricht dem Produkt aus den Primzahlen von 1-20? (2 , 3 , 5 , 7 , 11 , 13 , 17 , 19)

2 DT: The average (arithmetic mean) of the integers from 200 to 400, inclusive, is how much greater than the average of integers from 50 to 100, inclusive?

21 DT: John deposited $10.000 to open a new savings account that earned 4% annual interest, compounded quarterly. If there were no other transactions in the account, what was the amount of money in John's account 6 month after the account was opened?

13 DT: If s and t are positive integers such as s/t=64.12, which of the following could be the remainder when s is divided by t?

What is meant by standard devation

11 DT: Of the three digit integers greater than 700, how many have two digits that are equal to each other and the remaining digit different to the other two?

14 DT: Of the 84 parents who attended a meeting at a school, 35 volunteered to supervise children during school picnic and 11 volunteered both to supervise children during picnic and  to bring refreshments to the picnic. If the number of parents who volunteered to bring refreshments was 1.5times the number of parents who neither volunteered to supervise children during the picnic nor volunteered to bring refreshments, how many parents volunteered to bring refreshments?

12 DT: Positiv integer y is 50 percent of 50 percent of positive integer x, and y percent of x equals 100. What is the value of x?

18 DT: If n is the product of the integers from 1 to 8, inclusive, how many different prime factors greater than 1 does n have?

7 DT: A certain club has 10 members, including Harry. One of the 10 members is to be chosen random to be the president, one of the remaining 9 members is to be chosen random the secretary and on of the remaining 8 is to be chosen randomly the treasurer. What is the propability that Harry will be either the member chosen to be secretary or the member chosen to be treasurer?