A quantity that is cubed retains its original sign: if it starts out positive, it remains positive and if it starts out negative, it remains negative.
Motto -- Catch the Snapshot of Important Concepts on GMAT which are frequently tested. Feel free to add any concepts which u think is relevant.
Monday, April 11, 2011
Wednesday, April 6, 2011
Decimals
tenths digit is the first digit to the right of the decimal point.
Similar Triangles
Triangles are defined as similar if all their corresponding angles are equal or if the lengths of their corresponding sides have the same ratios.
First, recall that in a right triangle, the two shorter sides intersect at the right angle.
if two similar figures have lengths in a given ratio (say A:B), then their areas will have a ratio that is the square of this length ratio (i.e.,A2:B2). Conversely, if the areas are in a given ratio, then the lengths will be in the square root of that ratio. ( Look at MGMAT CAT 4. q 19) Excellent example.
Thursday, March 31, 2011
QUANTITY
QUANTITY STUFF:
Countable vs Non-Countable
Many Much
Few Less
Number Amount
Numerous Greater
Semicolon
SEMI COLON IS OFTEN FOLLOWED BY A CONJUCTIVE ADVERB:
- “HOWEVER”
- “THEREFORE”
- “IN ADDITION”
Wrong: Andrew and Lisa are inseparable, THEREFORE, we never see them apart
- THEREFORE needs a semi colon before it
Right: Andrew and Lisa are inseparable; THEREFORE, we never see them apart
Connecting words
Common Connecting Words:
Coordinating Conjunctions: FOR, AND, NOR, BUT, OR, YET, SO
Subordinators: ALTHOUGH, BECAUSE, BEFORE, AFTER, SINCE
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