R

Ram Sharma • 193.84K Points
Coach Computer

Q. निम्न मे से प्रथम गणना यंत्र कौनसा है?

(A) डिफरेंस इंजन
(B) अबैकस
(C) घडी
(D) कैलकुलेटर
Correct Answer - Option (B)

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