A box contain 100 tickets numbered 1, 2,...

A box contain 100 tickets numbered 1, 2,......, 100. Two tickets are chosen at random. It is given that the minimum number on the two chosen tickets is not more than 10. The maximum number on them is 5 with probability________.

`13//15`

`1//330`

`1//3`

`1//9`

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