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Question
’Bluetooth' নিচের কোন প্রযুক্তি ব্যবহার করে?
Magnetic
Optical
Laser
Radio Frequency
ANSWER : 4
Descrption
<p>Bluetooth technology uses short-range wireless communication technology that uses radio waves in the frequency range of 2.4 GHz to 2.485 GHz. </p>
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