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If t is an integer, is 3^t a factor of 21!?
If t is an integer, is 3^t a factor of 21!?(1) t is the product of two distinct single-digit prime numbers that are smaller than 7.(2) 0 < t < 9
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A certain sequence of x letters complies with the following
A certain sequence of x letters complies with the following rules: The letter 'I' may be followed only by a 'J'; The letter 'J' may be followed only by a 'K'; The letter 'K' may be followed only by an...
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Is (4^x)^(5-3x) = 1?
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STATISTICS - COMBINATION
Two teams of four women are formed from 12 women. In how many ways can this de done????I've got 12C4*8C4 = 34650 but the answer in the book says 17325?????PLEASE HELP.
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a man arrives at a train station 1 hr earlier
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Three-twentieths of the members of a social club are retiree
Three-twentieths of the members of a social club are retirees who are also bridge players, seven-twentieths of the members are retirees, and one-half of the members are bridge players. If 120 of the...
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Lines a and b have different y-intercepts. When line a is
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A school administrator will assign each student in a group o
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There are k-2 members in a certain band, including Jim and
There are k-2 members in a certain band, including Jim and Allan. Two members are to be selected to attend the Grammy awards ceremony. If there are 10 possible combinations in which Jim and Allan are...
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if -4 < x < 7 and -6 < y < 3 which of the following
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Some hard questions for me - Help if possible please :D
1) There are two recepients A and B, both have salt and sugar in a proportion of 5:3 and 2:3 , respectively. When mixing the two containers are removed to form a new mixture containing 50% salt and 50%...
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To asphalt 1km road, 30 men spent 12 days working 8 hours
To asphalt 1km road, 30 men spent 12 days working 8 hours per day. How many days, 20 men will spend to asphalt a road of 2km working 12 hours a day?A)12B)18C)24D)30E)36[Reveal] Spoiler: C
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A company has 50 employees, of which 22 studied accounting,
A company has 50 employees, of which 22 studied accounting, 15 studied finance and 14 studied marketing. Nine employees have done just two courses and only one made the three courses. How many...
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A group of students was interviewed for that if it was asked
A group of students was interviewed for that if it was asked whether or not they speak Spanish and / or English. Among those who speak Spanish, 17 speak English well, while 31 of them do not speak...
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Data Sufficiency Fundamentals Summary
Few fundamental strategies and rules relating to Data Sufficiency: Use a consistent approach to each Data Sufficiency question. Always organize the question first and make sure you have leveraged every...
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If (1/5)^m * (1/4)^18 = 1/(2(10)^35), then m = ?
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GMAT Geometry Cheat Sheet
Here I am going to post a GMAT Geometry Cheat Sheet which can be used to review most of the concepts and Formula for Geometry ESSENTIAL PROPERTIES OF TRIANGLESArea = (Base)(Height)Isosceles Triangles:...
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Geometry Solving Startgies
Triangles SummaryTriangles are the most frequently tested shapes on the GMAT; even when a problem does not explicitly provide a triangle, you will often need to employ your knowledge of triangles to...
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if x, y and z are positive numbers, is z between x and y?
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A pod of 6 dolphins always swims single file, with 3 females
A pod of 6 dolphins always swims single file, with 3 females at the front and 3 males in the rear. In how many different arrangements can the dolphins swim? A. 20B. 36C. 40D. 18E. 54
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