6. | A bag contains 64 balls of 8 different colours. There are eight of each colour (including red). What is the least number of balls you need to pick to be sure of getting 3 red balls? | |||||||
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7. | A driving school claims an average test pass rate of 76.8 percent. What is the least number of pupil required to get this result? | |||||||
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8. | It is a small town railway station and there are 25 stations on that line. At each of the 25 station the passenger can get tickets for any of the other 24 stations. How many different kinds of ticket do you think the booking clerk to keep? | |||||||
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9. | If C+ Y means C is the mother of Y; C-Y means C is the brother of Y; C%Y means C is the father of Y; C x Y means C is the sister of Y; which of the following shows that J is the maternal uncle of K? | |||||||
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10. | Tanya is older than Eric. Cliff is older than Tanya. Eric is older than Cliff .If the first two statements are true, the third statement is | |||||||
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