IshanGre wrote:

Will it be a wrong approach to plug in different values of X and Y and land on the option D.

however, certainly the answer can be found by expanding the formula.

Plugging values is a method of elemination. Ideally one should use it when other options are not available.

Also ideally pick questions where the number of variables is low. Otherwise the number of values you need totest your hypothesis becomes too large.

For example a question with one variable can be tested with 2 or 3 points

A question with 2 variables would need 4 or 9 points (2points * 2points (4) or 3 points * 3points (9)).

In this case best avoid plugging unless you have run out of options.

_________________

Sandy

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