A gear rotates at 240 rpm. How many complete revolutions does it make in 45 seconds?
ক) 180 revolutions
খ) 190 revolutions
গ) 200 revolutions
ঘ) 240 revolutions
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ক) Tk. 1780
খ) Tk. 1880
গ) Tk. 1900
ঘ) Tk. 2000
ক) 15%
খ) 20%
গ) 25%
ঘ) 30%
ক) 30°
খ) 45°
গ) 60°
ঘ) 90°
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