প্রশ্ন ও উত্তর
A boat goes 13km upstream in 39 minutes. The speed of stream is 3km/hr. The speed of boat in still water is-
22 Mar, 2025
প্রশ্ন A boat goes 13km upstream in 39 minutes. The speed of stream is 3km/hr. The speed of boat in still water is-
সঠিক উত্তর
23km/hr
মন্তব্য
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