If the system of equations 4x + py = 21 and px – 2y = 15 has unique solution,
If the system of equations 4x + py = 21 and px – 2y = 15 has unique solution, then which of the following could be the value of p ?
a) 103
b) 105
c) 192
d) 197
A) Both (a) and (b)
B) Both (c) and (d)
C) (a), (b) and (d)
D) All of the above
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