railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Current Affairs Science and Technology

બ્લૂટૂથના શોધક _______ છે

1
ચાર્લ્સ સિમોની
2
બીલ ગેટ્સ
3
જાપ હાર્ટસેન
4
પૉલ એલન
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