Number System
If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series?

6/13
9/13
7/13
8/13

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Number System
If the letters of the word PREVIOUS be arranged at random, what is the probability that all the vowels come together ?

1/10
1/14
1/16
1/12

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