GMAT Math : Basic Rules For Maths

25 cards

This Set Of Card Contains Some Basic Rules To Remember For Maths Questions. Some Rules Are Very Simple, But Still Nice For Revision.


 
  
Created Dec 6, 2006
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  Side A   Side B
1
What is Even x Even ?
 
Even
2
What is Even x Odd ?
 
Even
3
Odd x Odd = ?
 
Odd
4
Even + Even = ?
 
Even
5
Even + Odd = ?
 
Odd
6
Odd + Odd = Even
 
Even
7
In a right triangle with two 45 degree angles, what are the ratios?
 
s: s : square root of 2
8
In a right triangle, if two sides are 7 and 25, what's the third?
 
24
9
In a right triangle 30:60:90 degree angles, what are the ratios of the sides?
 
a: 2a: a X square root of 3
10
In a right triangle with sides 15 and 36, how much is the third side?
 
39 (it's a 5: 12: 13 triangle)
11
What happens when you divide an isoceles triangle in half down the middle?
 
You get a 30: 60: 90 triangle with sides of a, 2a and a x square root of 3
12
Area of a square based on diagonal is?
 
1/2 d squared
13
To find the interior angle of any polygone use what formula?
 
(n-2) X 180 degrees
14
Volume of a cube =
 
e cubed
15
volume of a rectangular solid =
 
l X w x h
16
volume of a cylinder =
 
(PI X r-squared) X height
17
total surface area of a cylinder
 
circumference X height + 2 (pi X r-squared)
18
What is the third side if a triangle is 36: 45 ?
 
27
19
What is the diagonal of a square side of 64?
 
64 x square root 2
20
Total surface area of a cube
 
6e-squared
21
Length of an arc is?
 
(2 x pi-r)* x/360 circumference * fraction of the circle
22
If J can paint a house in six days and E can paint it in 8, how long will it take working together?
 
x/6 + x/8 = 1
23
What's the avg among a sequence of equally spaced numbers?
 
The median
24
The surface area of a cylinder is
 
2-pi-squared + 2-pi X radius X height
25
volume formula for a cylinder
 
V = pi X r-squared X height


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