If a and b be positive integers such that a2 b2= 19, then the value

1.	If a and b be positive integers such that a² b²= 19, then the value of a is
A.	19
B.	20
C.	9
D.	10
Answer» E.

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If a and b be positive integers such that a2 b2= 19, then the value of a is

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If a and b be positive integers such that a² b²= 19, then the value of a is