Question

If 3^(x - y) = 27 and 3^(x + y) = 243, then x is equal to:

a.

0

b.

2

c.

4

d.

6

Posted under Aptitude

Answer: (c).4

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Q. If 3^(x - y) = 27 and 3^(x + y) = 243, then x is equal to:

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