GMAT prep PT1 - symbol

This topic has expert replies
Source: — Data Sufficiency |

User avatar
Legendary Member
Posts: 519
Joined: Sat Jan 27, 2007 7:56 am
Location: India
Thanked: 31 times

by Neo2000 » Tue Mar 03, 2009 12:52 pm
Addition and Multiplication are both commutative properties. Hence from 1 you cannot say which function is represented.

From 2, you can definitely say that Multiplication is represented by Delta.
The best way would be to expand assuming either Multiplication or Addition and seeing which satisfies.