GMAT Math Flashcards by Calvin Russell | Brainscape

Q

12x6

A

72

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Q

12x7

A

84

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Q

12x8

A

96

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Q

12x9

A

108

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Q

12x11

A

121

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Q

1/8

A

0.125

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Q

3/8

A

1/8+2/8= 0.125+25 = 0.375

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Q

X/9

A

0.XXXX

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Q

ExE

A

E

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Q

OxE

A

E

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Q

OxO

A

O

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Q

E+E

A

E

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Q

E+O

A

O

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Q

O+O

A

E

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Q

Prime List

A

2/3/5/7/11/13/17/19/23/29/31/37/41/43/47/53/59/61/67/71/73/79/83/89/97

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Q

Simple Interest

A

Principal x r x t

Q

Compound Interest

A

P x (1+r)^t

Q

Combined work

A

AB/A+B or ABC/AB+AC+BC etc…

Q

Overlapping Sets / Distance-Time Qs

A

Make Chart Right Away!

Q

Combintations

A

Unordered Group n!/k!(n-k)!

Q

Permutations

A

Ordered Group n!/(n-k)!

Q

Special Right Triangles

A

3:4:5 and 5:12:13

Q

30-60-90 Side lengths

A

x : x*sqrt(3) : 2x

Q

45-45-90 Side lengths

A

x : x : x:*sqrt(2)