## Probability of Positive Integers being Coprime !

What is the probability that six randomly chosen positive integers are relatively prime ?

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## Number of Combinations !

In how many ways can you select 7 letters from the word MISSISSIPPIRIVER regardless of their orders?

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## Distance Between Two Places & Time Taken !

Manish and Rajni start from a place M at the same time to reach another place R. Manish travels at a constant speed of 21 kmph, while Rajni starts with...

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## How Many Numbers Divisible ?!

How many integers from 100 to 10000, inclusive, are exactly divisible by 6 or 11 or 14 or 15 but neither divisible by 30 nor by 42 ?

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