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Re: Store S sold a total of 90 copies of a certain book during the seven days last week and it sold different numbers...

Source: GMAT Prep Store S sold a total of 90 copies of a certain book during the seven days last week and it sold different numbers of copies on any 2 days. If for the seven days Store S sold the greatest number of copies on Saturday and the second greatest number of copies on Friday, did Store S s...


Re: A data company recently conducted a survey to determine whether people use product X or product Y. If fewer than 100

A data company recently conducted a survey to determine whether people use product X or product Y. If fewer than 100 people were surveyed and each person used either one product or both, how many people used product Y? (1) 65% of survey respondents used only product X (2) 10% of survey respondents ...


Re: Which of the following is NOT a factor of 20!?

Which of the following is NOT a factor of 20!? I. 29 II. 85 III. 121 A. I only B. II only C. III only D. I and II E. I and III OA E Source: Magoosh We know that 20! = 1.2.3....20. Let's take each statement one by one. I. 29: Since 29 is a prime number and is greater than 20, we see that 29 is NOT a...

by [email protected]

Thu Aug 06, 2020 12:00 am
Forum: Problem Solving
Topic: Which of the following is NOT a factor of 20!?
Replies: 2
Views: 228

Re: How many triangles and quadrilaterals altogether can be formed using the vertices of a 7-sided regular polygon?

How many triangles and quadrilaterals altogether can be formed using the vertices of a 7-sided regular polygon? A 35 B 40 C 50 D 65 E 70 • Number of triangles can be formed from a polygon with 7 sides = 7C3 = (7*6*5) / (1*2*3) = 35; • Number of quadrilaterals can be formed from a polygon with 7 sid...


Re: What is the approximate minimum length of a rope required to enclose an area of 154 square meters?

What is the approximate minimum length of a rope required to enclose an area of 154 square meters? A 154 B 60 C 57 D 50 E 44 For the given area 154 sq. mtr, to get the approximate minimum length of the rope required to enclose the area, the plane must be a circle. So, we have Area of circle = πr^2 ...


Re: A perfect number is defined as one for which the sum of all the unique factors less the number itself is equal to th

A perfect number is defined as one for which the sum of all the unique factors less the number itself is equal to the number. For instance, 6 is a perfect number, because the factors of 6 (apart from 6 itself) are 1, 2 and 3, and 1+2+3=61+2+3=6. Which of the following is also a perfect number? A 12...


Re: A set of 11 different integers has a median of 25 and a range of 50. What is the greatest possible integer that coul

A set of 11 different integers has a median of 25 and a range of 50. What is the greatest possible integer that could be in this set? A 65 B 70 C 75 D 80 E 85 Since there are 11 different integers, the median would the value of (11 + 1)/2 = 6th integer, when the integers are arranged in ascending o...


Re: The sum of five consecutive even integers is 20. What is the product of the median of the sequence and the smallest

The sum of five consecutive even integers is 20. What is the product of the median of the sequence and the smallest integer in the sequence? (A) 12 (B) 10 (C) 6 (D) 4 (E) 0 OA E Source: Magoosh Say the five consecutive integers are x, (x +2), (x +4), (x +6), and (x +8). So, the sum of the five inte...


Re: At a business dinner, people were offered coffee or tea. If all the diners had either coffee or tea, how many of the

At a business dinner, people were offered coffee or tea. If all the diners had either coffee or tea, how many of the diners had tea? (1) Of the 60 people at the dinner, 10% had tea. (2) Fifty-four people had coffee. OA A Source: Princeton Review Statement 1 itself is sufficient. Number of diners wh...


Re: The greatest number in a set of 4 numbers is 70. What is the average (arithmetic mean)...

Source: Princeton Review The greatest number of a set of 4 numbers is 70. What is the average (arithmetic mean) of the set? 1) The median of the set is 25 2) The range of the set is 70 The OA is C Let's take each statement one by one. 1) The median of the set is 25. Since there are 4 numbers, the m...


Re: A salesman makes a 20 percent commission on the selling price of each set of encyclopedias...

Source: GMAT Paper Tests A salesman makes a 20 percent commission on the selling price of each set of encyclopedias he sells. If he sells 12 identical sets of encyclopedias and makes $1800 in commissions, what is the selling price of the each set? A. $300 B. $600 C. $750 D. $900 E. $1080 The OA is ...


Re: An automobile's gasoline mileage varies, depending on the speed of the automobile, between 18.0 and...

Source: GMAT Paper Tests An automobile's gasoline mileage varies, depending on the speed of the automobile, between 18.0 and 22.4 miles per gallon, inclusive. What is the maximum distance, in miles, that the automobile could be driven on 15 gallons of gasoline? A. 336 B. 320 C. 303 D. 284 E. 270 Th...


Re: From Aqua-Bella island, it is possible to reach Aqua-Marine island by either ferry A or ferry B. Ferry A...

Economist GMAT From Aqua-Bella island, it is possible to reach Aqua-Marine island by either ferry A or ferry B. Ferry A sails 3 hours at 7 kilometers per hour, while ferry B takes a route that is three times longer. If ferry A is slower than ferry B by 2 kilometers per hour, how many hours longer i...


Re: In the last week, Todd has lost 12 pounds and now weighs exactly three times as much as his younger brother. Togethe

In the last week, Todd has lost 12 pounds and now weighs exactly three times as much as his younger brother. Together they weigh 280 pounds. How much did Todd weigh a week ago, in pounds? A. 210 B. 213 C. 220 D. 222 E. 225 OA D Source: Veritas Prep Say Todd's weight before losing 12 pounds was x lb...


Re: A grocer bought 10 dozen bottles of jam at $18 per dozen from the wholesale market. The grocer found

A grocer bought 10 dozen bottles of jam at $18 per dozen from the wholesale market. The grocer found that 10 bottles were broken and had to be thrown away. At what price per bottle should he sell, so as to make a profit of 10%, if he also spent $24 on transportation costs? A. $2.04 B. $2.25 C. $2.4...