कौन लघुगणक तालिकाओं का आवि – McqOptions

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1.	कौन लघुगणक तालिकाओं का आविष्कार किया?
A.	जॉन हैरिसन
B.	जॉन डो
C.	जॉन नेपियर
D.	जॉन डगलस
Answer» D. जॉन डगलस

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