## In the expression $$a \ b,$$ the $$\$$ symbol represents one of the following arithmetic operations on $$a$$ and $$b$$

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### In the expression $$a \ b,$$ the $$\$$ symbol represents one of the following arithmetic operations on $$a$$ and $$b$$

by Gmat_mission » Fri Jan 28, 2022 11:55 am

00:00

A

B

C

D

E

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In the expression $$a \ b,$$ the $$\$$ symbol represents one of the following arithmetic operations on $$a$$ and $$b$$ (in the order the variables are shown): addition, subtraction, multiplication, and division. Given that it is not true that $$a \ b = b \ a$$ for all possible values of $$a$$ and $$b,$$ a pair of nonzero, non-identical values for $$a$$ and $$b$$ is chosen such that $$a \ b$$ produces the same result, no matter which of the operations (under the given constraints) that $$\$$ represents. The nonzero value of $$b$$ that cannot be chosen, no matter the value of $$a$$, is

A. $$-2$$

B. $$-1$$

C. $$-\dfrac12$$

D. $$1$$

E. $$\dfrac12$$