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Mathematics, 18.10.2020 15:01 thao6570

3. Mr. Raghul is a kind with some animals’ .In his home there are so many animals. Minnu cat meows every 6 seconds. Polly Parrot squawks every 12 seconds. Mr Toad croaks every 21 seconds. They both make a noise at the same time. After how many seconds will they next make a noise at the same time?What value you can see in him? 4.At the gym, Hina swims every 16 days, runs every 42 days and cycles every 36 days. If she did all three activities today, in how many days will she do all three activities again on the same day?

5. In a morning walk, three persons step off together. Their steps measure 75 cm, 80 cm and 90 cm respectively. What is the minimum distance each should walk so that all can cover the same distance in complete steps?

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