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it's a OR question of 29 A boat covers 32km upstream and 36km downstream in 7 hours . Also,. it covers 40km upstream and 48km downstream in 9 hours. Find the speed of boat in still water and that of the stream.
prakz999
Q30 Prove that√5 is an irrational number. Hence show that 3+2√5 is also an irrational number.
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