In 2 the symbol can represent either a + or a -
If + then ans is C
If - the the equation (5-6)-2 = 5-(6-2) is does not hold true hence ans is A as B is insuff
Symbol represents one of the four arithmetic operations ...
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Source: Beat The GMAT — Data Sufficiency |
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sushilmore
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condition I
Tells us that operator is + or * and using this eq is true
Condition II
operator is + or -
with + , eq is true
with -, eq is not true.
Hence A
Tells us that operator is + or * and using this eq is true
Condition II
operator is + or -
with + , eq is true
with -, eq is not true.
Hence A
