Which number should be added to the numbers 13, 15, 19 so that the resulting numbers be the consecutive terms of a H.P.

Which number should be added to the numbers 13, 15, 19 so that the res

1.	Which number should be added to the numbers 13, 15, 19 so that the resulting numbers be the consecutive terms of a H.P.
A.	7
B.	6
C.	\[-6\]
D.	\[-7\]
Answer» E.

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Which number should be added to the numbers 13, 15, 19 so that the resulting numbers be the consecutive terms of a H.P.

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