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There is a five volume dicitionary among...

There is a five volume dicitionary among 10 books arranged in a shelf in random order. The probability that these volumes stands in increasing order from left to right not necessarily kept side by side is

A

`1//100`

B

`1//110`

C

`1//90`

D

`1//120`

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The correct Answer is:
D
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AAKASH SERIES-PROBABILITY-Exercise-I
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