What is the name of the device invented by John Napier?
A Napier's Bones
B Napier's Stones
C Napier's Rows
D Napier's Beads
Ans A Napier Bones
What is the name of the device invented by John Napier?
A Napier's Bones
B Napier's Stones
C Napier's Rows
D Napier's Beads