Perimeter of front wheel =30, back wheel = 20. If front wheel
revolves 240 times. How many revolutions will the back wheel
take?
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Zulus always speak truth and Hutus always speak lies. There are three persons A,B&C. A met B and says " I am a Zulu or I am Hutu". We don't know what exactly he said. then B meets C and says to c that " A is a Zulu ". Then C replied " No, A is a Hutu ". How many Zulus are there ?
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